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Finding the Fourth Proportional to 512,098.31, 706,691.85 and 282,655.55

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Solution

The fourth proportional to 512,098.31, 706,691.85 and 282,655.55 is: 390,062.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    512,098.31 : 706,691.85 = 282,655.55 : x
  2. Step 2: Convert to fraction form
    512,098.31/706,691.85 = 282,655.55/x
  3. Step 3: Cross multiply
    512,098.31x = 706,691.85 × 282,655.55
  4. Step 4: Simplify right side
    512,098.31x = 199,750,373,542.27
  5. Step 5: Solve for x
    x = 199,750,373,542.27/512,098.31
  6. Step 6: Final answer
    x = 390,062.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.