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Finding the Fourth Proportional to 873,765,963.20, 1,310,648,944.80 and 530,900,350.40

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Solution

The fourth proportional to 873,765,963.20, 1,310,648,944.80 and 530,900,350.40 is: 796,350,525.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,765,963.20 : 1,310,648,944.80 = 530,900,350.40 : x
  2. Step 2: Convert to fraction form
    873,765,963.20/1,310,648,944.80 = 530,900,350.40/x
  3. Step 3: Cross multiply
    873,765,963.20x = 1,310,648,944.80 × 530,900,350.40
  4. Step 4: Simplify right side
    873,765,963.20x = 695,823,984,045,710,208
  5. Step 5: Solve for x
    x = 695,823,984,045,710,208/873,765,963.20
  6. Step 6: Final answer
    x = 796,350,525.60

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Double scale
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Similar ratio
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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.