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Finding the Fourth Proportional to 72,292.20, 108,446.40 and 22,371.90

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Solution

The fourth proportional to 72,292.20, 108,446.40 and 22,371.90 is: 33,560.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,292.20 : 108,446.40 = 22,371.90 : x
  2. Step 2: Convert to fraction form
    72,292.20/108,446.40 = 22,371.90/x
  3. Step 3: Cross multiply
    72,292.20x = 108,446.40 × 22,371.90
  4. Step 4: Simplify right side
    72,292.20x = 2,426,152,016.16
  5. Step 5: Solve for x
    x = 2,426,152,016.16/72,292.20
  6. Step 6: Final answer
    x = 33,560.36

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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.