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Finding the Fourth Proportional to 525,961,082.30, 788,941,623.45 and 238,746,746.30

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Solution

The fourth proportional to 525,961,082.30, 788,941,623.45 and 238,746,746.30 is: 358,120,119.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,961,082.30 : 788,941,623.45 = 238,746,746.30 : x
  2. Step 2: Convert to fraction form
    525,961,082.30/788,941,623.45 = 238,746,746.30/x
  3. Step 3: Cross multiply
    525,961,082.30x = 788,941,623.45 × 238,746,746.30
  4. Step 4: Simplify right side
    525,961,082.30x = 188,357,245,619,327,296
  5. Step 5: Solve for x
    x = 188,357,245,619,327,296/525,961,082.30
  6. Step 6: Final answer
    x = 358,120,119.45

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Half scale
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Double scale
Find fourth proportional to 525,961,083.30, 788,941,624.95 and 238,746,747.30
Similar ratio
Find fourth proportional to 788,941,623.45, 1,183,412,435.18 and 358,120,119.45
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.