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Finding the Fourth Proportional to 71,931.96, 107,608.80 and 62,175.96

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Solution

The fourth proportional to 71,931.96, 107,608.80 and 62,175.96 is: 93,014.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,931.96 : 107,608.80 = 62,175.96 : x
  2. Step 2: Convert to fraction form
    71,931.96/107,608.80 = 62,175.96/x
  3. Step 3: Cross multiply
    71,931.96x = 107,608.80 × 62,175.96
  4. Step 4: Simplify right side
    71,931.96x = 6,690,680,444.45
  5. Step 5: Solve for x
    x = 6,690,680,444.45/71,931.96
  6. Step 6: Final answer
    x = 93,014.02

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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.