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Finding the Fourth Proportional to 129,292.30, 193,938.42 and 40,553.56

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Solution

The fourth proportional to 129,292.30, 193,938.42 and 40,553.56 is: 60,830.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,292.30 : 193,938.42 = 40,553.56 : x
  2. Step 2: Convert to fraction form
    129,292.30/193,938.42 = 40,553.56/x
  3. Step 3: Cross multiply
    129,292.30x = 193,938.42 × 40,553.56
  4. Step 4: Simplify right side
    129,292.30x = 7,864,893,351.78
  5. Step 5: Solve for x
    x = 7,864,893,351.78/129,292.30
  6. Step 6: Final answer
    x = 60,830.33

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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.