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Finding the Fourth Proportional to 132,566.80, 198,715.80 and 65,904.40

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Solution

The fourth proportional to 132,566.80, 198,715.80 and 65,904.40 is: 98,789.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,566.80 : 198,715.80 = 65,904.40 : x
  2. Step 2: Convert to fraction form
    132,566.80/198,715.80 = 65,904.40/x
  3. Step 3: Cross multiply
    132,566.80x = 198,715.80 × 65,904.40
  4. Step 4: Simplify right side
    132,566.80x = 13,096,245,569.52
  5. Step 5: Solve for x
    x = 13,096,245,569.52/132,566.80
  6. Step 6: Final answer
    x = 98,789.78

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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.