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Finding the Fourth Proportional to 479,186.91, 717,724.32 and 396,084.53

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Solution

The fourth proportional to 479,186.91, 717,724.32 and 396,084.53 is: 593,253.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,186.91 : 717,724.32 = 396,084.53 : x
  2. Step 2: Convert to fraction form
    479,186.91/717,724.32 = 396,084.53/x
  3. Step 3: Cross multiply
    479,186.91x = 717,724.32 × 396,084.53
  4. Step 4: Simplify right side
    479,186.91x = 284,279,496,368.15
  5. Step 5: Solve for x
    x = 284,279,496,368.15/479,186.91
  6. Step 6: Final answer
    x = 593,253.89

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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.