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Finding the Fourth Proportional to 392,486.90, 588,553.23 and 111,937.46

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Solution

The fourth proportional to 392,486.90, 588,553.23 and 111,937.46 is: 167,855.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,486.90 : 588,553.23 = 111,937.46 : x
  2. Step 2: Convert to fraction form
    392,486.90/588,553.23 = 111,937.46/x
  3. Step 3: Cross multiply
    392,486.90x = 588,553.23 × 111,937.46
  4. Step 4: Simplify right side
    392,486.90x = 65,881,153,641.00
  5. Step 5: Solve for x
    x = 65,881,153,641.00/392,486.90
  6. Step 6: Final answer
    x = 167,855.68

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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.