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Finding the Fourth Proportional to 391,231.84, 586,627.44 and 124,929.76

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Solution

The fourth proportional to 391,231.84, 586,627.44 and 124,929.76 is: 187,324.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,231.84 : 586,627.44 = 124,929.76 : x
  2. Step 2: Convert to fraction form
    391,231.84/586,627.44 = 124,929.76/x
  3. Step 3: Cross multiply
    391,231.84x = 586,627.44 × 124,929.76
  4. Step 4: Simplify right side
    391,231.84x = 73,287,225,288.61
  5. Step 5: Solve for x
    x = 73,287,225,288.61/391,231.84
  6. Step 6: Final answer
    x = 187,324.29

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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.