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Finding the Fourth Proportional to 612,871.36, 919,307.06 and 192,181.12

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Solution

The fourth proportional to 612,871.36, 919,307.06 and 192,181.12 is: 288,271.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,871.36 : 919,307.06 = 192,181.12 : x
  2. Step 2: Convert to fraction form
    612,871.36/919,307.06 = 192,181.12/x
  3. Step 3: Cross multiply
    612,871.36x = 919,307.06 × 192,181.12
  4. Step 4: Simplify right side
    612,871.36x = 176,673,460,414.71
  5. Step 5: Solve for x
    x = 176,673,460,414.71/612,871.36
  6. Step 6: Final answer
    x = 288,271.69

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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.