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Finding the Fourth Proportional to 48,449, 72,685.02 and 15,617

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Solution

The fourth proportional to 48,449, 72,685.02 and 15,617 is: 23,429.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,449 : 72,685.02 = 15,617 : x
  2. Step 2: Convert to fraction form
    48,449/72,685.02 = 15,617/x
  3. Step 3: Cross multiply
    48,449x = 72,685.02 × 15,617
  4. Step 4: Simplify right side
    48,449x = 1,135,121,957.34
  5. Step 5: Solve for x
    x = 1,135,121,957.34/48,449
  6. Step 6: Final answer
    x = 23,429.21

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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.