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Finding the Fourth Proportional to 172,470.48, 258,872.56 and 124,488.55

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Solution

The fourth proportional to 172,470.48, 258,872.56 and 124,488.55 is: 186,853.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,470.48 : 258,872.56 = 124,488.55 : x
  2. Step 2: Convert to fraction form
    172,470.48/258,872.56 = 124,488.55/x
  3. Step 3: Cross multiply
    172,470.48x = 258,872.56 × 124,488.55
  4. Step 4: Simplify right side
    172,470.48x = 32,226,669,641.56
  5. Step 5: Solve for x
    x = 32,226,669,641.56/172,470.48
  6. Step 6: Final answer
    x = 186,853.25

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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.