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Finding the Fourth Proportional to 48,487.77, 72,731.66 and 13,426.65

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Solution

The fourth proportional to 48,487.77, 72,731.66 and 13,426.65 is: 20,139.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,487.77 : 72,731.66 = 13,426.65 : x
  2. Step 2: Convert to fraction form
    48,487.77/72,731.66 = 13,426.65/x
  3. Step 3: Cross multiply
    48,487.77x = 72,731.66 × 13,426.65
  4. Step 4: Simplify right side
    48,487.77x = 976,542,475.61
  5. Step 5: Solve for x
    x = 976,542,475.61/48,487.77
  6. Step 6: Final answer
    x = 20,139.98

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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.