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Finding the Fourth Proportional to 118,766.70, 177,901.65 and 55,640.70

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Solution

The fourth proportional to 118,766.70, 177,901.65 and 55,640.70 is: 83,344.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,766.70 : 177,901.65 = 55,640.70 : x
  2. Step 2: Convert to fraction form
    118,766.70/177,901.65 = 55,640.70/x
  3. Step 3: Cross multiply
    118,766.70x = 177,901.65 × 55,640.70
  4. Step 4: Simplify right side
    118,766.70x = 9,898,572,337.16
  5. Step 5: Solve for x
    x = 9,898,572,337.16/118,766.70
  6. Step 6: Final answer
    x = 83,344.68

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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.