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Finding the Fourth Proportional to 223,787.91, 308,853.66 and 125,687.30

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Solution

The fourth proportional to 223,787.91, 308,853.66 and 125,687.30 is: 173,463.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,787.91 : 308,853.66 = 125,687.30 : x
  2. Step 2: Convert to fraction form
    223,787.91/308,853.66 = 125,687.30/x
  3. Step 3: Cross multiply
    223,787.91x = 308,853.66 × 125,687.30
  4. Step 4: Simplify right side
    223,787.91x = 38,818,981,547.58
  5. Step 5: Solve for x
    x = 38,818,981,547.58/223,787.91
  6. Step 6: Final answer
    x = 173,463.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.