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Finding the Fourth Proportional to 72,335.15, 108,472.28 and 27,348.90

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Solution

The fourth proportional to 72,335.15, 108,472.28 and 27,348.90 is: 41,011.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,335.15 : 108,472.28 = 27,348.90 : x
  2. Step 2: Convert to fraction form
    72,335.15/108,472.28 = 27,348.90/x
  3. Step 3: Cross multiply
    72,335.15x = 108,472.28 × 27,348.90
  4. Step 4: Simplify right side
    72,335.15x = 2,966,597,538.49
  5. Step 5: Solve for x
    x = 2,966,597,538.49/72,335.15
  6. Step 6: Final answer
    x = 41,011.84

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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.