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Finding the Fourth Proportional to 113,699.35, 156,905.76 and 62,713.90

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Solution

The fourth proportional to 113,699.35, 156,905.76 and 62,713.90 is: 86,545.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,699.35 : 156,905.76 = 62,713.90 : x
  2. Step 2: Convert to fraction form
    113,699.35/156,905.76 = 62,713.90/x
  3. Step 3: Cross multiply
    113,699.35x = 156,905.76 × 62,713.90
  4. Step 4: Simplify right side
    113,699.35x = 9,840,172,142.06
  5. Step 5: Solve for x
    x = 9,840,172,142.06/113,699.35
  6. Step 6: Final answer
    x = 86,545.54

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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.