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Finding the Fourth Proportional to 167,215.89, 250,905.84 and 78,476.61

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Solution

The fourth proportional to 167,215.89, 250,905.84 and 78,476.61 is: 117,753.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,215.89 : 250,905.84 = 78,476.61 : x
  2. Step 2: Convert to fraction form
    167,215.89/250,905.84 = 78,476.61/x
  3. Step 3: Cross multiply
    167,215.89x = 250,905.84 × 78,476.61
  4. Step 4: Simplify right side
    167,215.89x = 19,690,239,752.40
  5. Step 5: Solve for x
    x = 19,690,239,752.40/167,215.89
  6. Step 6: Final answer
    x = 117,753.40

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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.