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Finding the Fourth Proportional to 342,391.60, 513,548.52 and 132,011.92

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Solution

The fourth proportional to 342,391.60, 513,548.52 and 132,011.92 is: 198,002.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,391.60 : 513,548.52 = 132,011.92 : x
  2. Step 2: Convert to fraction form
    342,391.60/513,548.52 = 132,011.92/x
  3. Step 3: Cross multiply
    342,391.60x = 513,548.52 × 132,011.92
  4. Step 4: Simplify right side
    342,391.60x = 67,794,526,138.36
  5. Step 5: Solve for x
    x = 67,794,526,138.36/342,391.60
  6. Step 6: Final answer
    x = 198,002.89

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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.