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Finding the Fourth Proportional to 48,660.76, 72,991 and 11,724.76

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Solution

The fourth proportional to 48,660.76, 72,991 and 11,724.76 is: 17,587.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,660.76 : 72,991 = 11,724.76 : x
  2. Step 2: Convert to fraction form
    48,660.76/72,991 = 11,724.76/x
  3. Step 3: Cross multiply
    48,660.76x = 72,991 × 11,724.76
  4. Step 4: Simplify right side
    48,660.76x = 855,801,957.16
  5. Step 5: Solve for x
    x = 855,801,957.16/48,660.76
  6. Step 6: Final answer
    x = 17,587.11

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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.