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Finding the Fourth Proportional to 48,659.92, 72,989.88 and 11,723.92

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Solution

The fourth proportional to 48,659.92, 72,989.88 and 11,723.92 is: 17,585.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,659.92 : 72,989.88 = 11,723.92 : x
  2. Step 2: Convert to fraction form
    48,659.92/72,989.88 = 11,723.92/x
  3. Step 3: Cross multiply
    48,659.92x = 72,989.88 × 11,723.92
  4. Step 4: Simplify right side
    48,659.92x = 855,727,513.93
  5. Step 5: Solve for x
    x = 855,727,513.93/48,659.92
  6. Step 6: Final answer
    x = 17,585.88

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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.