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Finding the Fourth Proportional to 48,659.76, 72,989.51 and 11,723.76

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Solution

The fourth proportional to 48,659.76, 72,989.51 and 11,723.76 is: 17,585.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,659.76 : 72,989.51 = 11,723.76 : x
  2. Step 2: Convert to fraction form
    48,659.76/72,989.51 = 11,723.76/x
  3. Step 3: Cross multiply
    48,659.76x = 72,989.51 × 11,723.76
  4. Step 4: Simplify right side
    48,659.76x = 855,711,439.14
  5. Step 5: Solve for x
    x = 855,711,439.14/48,659.76
  6. Step 6: Final answer
    x = 17,585.61

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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.