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Finding the Fourth Proportional to 232,479.52, 348,686 and 74,687.20

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Solution

The fourth proportional to 232,479.52, 348,686 and 74,687.20 is: 112,020.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    232,479.52 : 348,686 = 74,687.20 : x
  2. Step 2: Convert to fraction form
    232,479.52/348,686 = 74,687.20/x
  3. Step 3: Cross multiply
    232,479.52x = 348,686 × 74,687.20
  4. Step 4: Simplify right side
    232,479.52x = 26,042,381,019.20
  5. Step 5: Solve for x
    x = 26,042,381,019.20/232,479.52
  6. Step 6: Final answer
    x = 112,020.11

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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.