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Finding the Fourth Proportional to 72,251.98, 99,706.15 and 39,546.23

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Solution

The fourth proportional to 72,251.98, 99,706.15 and 39,546.23 is: 54,572.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,251.98 : 99,706.15 = 39,546.23 : x
  2. Step 2: Convert to fraction form
    72,251.98/99,706.15 = 39,546.23/x
  3. Step 3: Cross multiply
    72,251.98x = 99,706.15 × 39,546.23
  4. Step 4: Simplify right side
    72,251.98x = 3,943,002,229.62
  5. Step 5: Solve for x
    x = 3,943,002,229.62/72,251.98
  6. Step 6: Final answer
    x = 54,572.93

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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.