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Finding the Fourth Proportional to 391,144.53, 586,621.97 and 106,836.41

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Solution

The fourth proportional to 391,144.53, 586,621.97 and 106,836.41 is: 160,228.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,144.53 : 586,621.97 = 106,836.41 : x
  2. Step 2: Convert to fraction form
    391,144.53/586,621.97 = 106,836.41/x
  3. Step 3: Cross multiply
    391,144.53x = 586,621.97 × 106,836.41
  4. Step 4: Simplify right side
    391,144.53x = 62,672,586,522.95
  5. Step 5: Solve for x
    x = 62,672,586,522.95/391,144.53
  6. Step 6: Final answer
    x = 160,228.72

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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.