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Finding the Fourth Proportional to 352,693.38, 529,032.78 and 86,455.29

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Solution

The fourth proportional to 352,693.38, 529,032.78 and 86,455.29 is: 129,681.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,693.38 : 529,032.78 = 86,455.29 : x
  2. Step 2: Convert to fraction form
    352,693.38/529,032.78 = 86,455.29/x
  3. Step 3: Cross multiply
    352,693.38x = 529,032.78 × 86,455.29
  4. Step 4: Simplify right side
    352,693.38x = 45,737,682,414.41
  5. Step 5: Solve for x
    x = 45,737,682,414.41/352,693.38
  6. Step 6: Final answer
    x = 129,681.15

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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.