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Finding the Fourth Proportional to 109,472.87, 151,072.47 and 59,171.87

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Solution

The fourth proportional to 109,472.87, 151,072.47 and 59,171.87 is: 81,657.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,472.87 : 151,072.47 = 59,171.87 : x
  2. Step 2: Convert to fraction form
    109,472.87/151,072.47 = 59,171.87/x
  3. Step 3: Cross multiply
    109,472.87x = 151,072.47 × 59,171.87
  4. Step 4: Simplify right side
    109,472.87x = 8,939,240,555.42
  5. Step 5: Solve for x
    x = 8,939,240,555.42/109,472.87
  6. Step 6: Final answer
    x = 81,657.13

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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.