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Finding the Fourth Proportional to 93,920.80, 129,660.60 and 63,866.56

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Solution

The fourth proportional to 93,920.80, 129,660.60 and 63,866.56 is: 88,169.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,920.80 : 129,660.60 = 63,866.56 : x
  2. Step 2: Convert to fraction form
    93,920.80/129,660.60 = 63,866.56/x
  3. Step 3: Cross multiply
    93,920.80x = 129,660.60 × 63,866.56
  4. Step 4: Simplify right side
    93,920.80x = 8,280,976,489.54
  5. Step 5: Solve for x
    x = 8,280,976,489.54/93,920.80
  6. Step 6: Final answer
    x = 88,169.78

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1.5x scale

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.