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Finding the Fourth Proportional to 118,193.80, 177,323.56 and 65,640.20

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Solution

The fourth proportional to 118,193.80, 177,323.56 and 65,640.20 is: 98,478.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,193.80 : 177,323.56 = 65,640.20 : x
  2. Step 2: Convert to fraction form
    118,193.80/177,323.56 = 65,640.20/x
  3. Step 3: Cross multiply
    118,193.80x = 177,323.56 × 65,640.20
  4. Step 4: Simplify right side
    118,193.80x = 11,639,553,943.11
  5. Step 5: Solve for x
    x = 11,639,553,943.11/118,193.80
  6. Step 6: Final answer
    x = 98,478.55

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1.5x scale

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.