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Finding the Fourth Proportional to 118,331.66, 177,459.15 and 39,424.70

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Solution

The fourth proportional to 118,331.66, 177,459.15 and 39,424.70 is: 59,124.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,331.66 : 177,459.15 = 39,424.70 : x
  2. Step 2: Convert to fraction form
    118,331.66/177,459.15 = 39,424.70/x
  3. Step 3: Cross multiply
    118,331.66x = 177,459.15 × 39,424.70
  4. Step 4: Simplify right side
    118,331.66x = 6,996,273,751.01
  5. Step 5: Solve for x
    x = 6,996,273,751.01/118,331.66
  6. Step 6: Final answer
    x = 59,124.28

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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.