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Finding the Fourth Proportional to 91,898.10, 137,847.15 and 62,406.90

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Solution

The fourth proportional to 91,898.10, 137,847.15 and 62,406.90 is: 93,610.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,898.10 : 137,847.15 = 62,406.90 : x
  2. Step 2: Convert to fraction form
    91,898.10/137,847.15 = 62,406.90/x
  3. Step 3: Cross multiply
    91,898.10x = 137,847.15 × 62,406.90
  4. Step 4: Simplify right side
    91,898.10x = 8,602,613,305.34
  5. Step 5: Solve for x
    x = 8,602,613,305.34/91,898.10
  6. Step 6: Final answer
    x = 93,610.35

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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.