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Finding the Fourth Proportional to 391,454.88, 586,968.63 and 117,861.18

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Solution

The fourth proportional to 391,454.88, 586,968.63 and 117,861.18 is: 176,727.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,454.88 : 586,968.63 = 117,861.18 : x
  2. Step 2: Convert to fraction form
    391,454.88/586,968.63 = 117,861.18/x
  3. Step 3: Cross multiply
    391,454.88x = 586,968.63 × 117,861.18
  4. Step 4: Simplify right side
    391,454.88x = 69,180,812,711.67
  5. Step 5: Solve for x
    x = 69,180,812,711.67/391,454.88
  6. Step 6: Final answer
    x = 176,727.43

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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.