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Finding the Fourth Proportional to 342,393.60, 513,551.52 and 132,013.92

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Solution

The fourth proportional to 342,393.60, 513,551.52 and 132,013.92 is: 198,005.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,393.60 : 513,551.52 = 132,013.92 : x
  2. Step 2: Convert to fraction form
    342,393.60/513,551.52 = 132,013.92/x
  3. Step 3: Cross multiply
    342,393.60x = 513,551.52 × 132,013.92
  4. Step 4: Simplify right side
    342,393.60x = 67,795,949,277.16
  5. Step 5: Solve for x
    x = 67,795,949,277.16/342,393.60
  6. Step 6: Final answer
    x = 198,005.89

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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.