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Finding the Fourth Proportional to 118,463.68, 177,607.52 and 71,705.60

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Solution

The fourth proportional to 118,463.68, 177,607.52 and 71,705.60 is: 107,505.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,463.68 : 177,607.52 = 71,705.60 : x
  2. Step 2: Convert to fraction form
    118,463.68/177,607.52 = 71,705.60/x
  3. Step 3: Cross multiply
    118,463.68x = 177,607.52 × 71,705.60
  4. Step 4: Simplify right side
    118,463.68x = 12,735,453,786.11
  5. Step 5: Solve for x
    x = 12,735,453,786.11/118,463.68
  6. Step 6: Final answer
    x = 107,505.13

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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.