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Finding the Fourth Proportional to 492,398.76, 738,585.18 and 155,425.80

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Solution

The fourth proportional to 492,398.76, 738,585.18 and 155,425.80 is: 233,134.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,398.76 : 738,585.18 = 155,425.80 : x
  2. Step 2: Convert to fraction form
    492,398.76/738,585.18 = 155,425.80/x
  3. Step 3: Cross multiply
    492,398.76x = 738,585.18 × 155,425.80
  4. Step 4: Simplify right side
    492,398.76x = 114,795,192,469.64
  5. Step 5: Solve for x
    x = 114,795,192,469.64/492,398.76
  6. Step 6: Final answer
    x = 233,134.61

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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.