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Finding the Fourth Proportional to 108,487.92, 149,711.66 and 60,742.98

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Solution

The fourth proportional to 108,487.92, 149,711.66 and 60,742.98 is: 83,824.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,487.92 : 149,711.66 = 60,742.98 : x
  2. Step 2: Convert to fraction form
    108,487.92/149,711.66 = 60,742.98/x
  3. Step 3: Cross multiply
    108,487.92x = 149,711.66 × 60,742.98
  4. Step 4: Simplify right side
    108,487.92x = 9,093,932,369.15
  5. Step 5: Solve for x
    x = 9,093,932,369.15/108,487.92
  6. Step 6: Final answer
    x = 83,824.38

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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.