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Finding the Fourth Proportional to 417,466.20, 625,277.70 and 168,019.80

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Solution

The fourth proportional to 417,466.20, 625,277.70 and 168,019.80 is: 251,658.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,466.20 : 625,277.70 = 168,019.80 : x
  2. Step 2: Convert to fraction form
    417,466.20/625,277.70 = 168,019.80/x
  3. Step 3: Cross multiply
    417,466.20x = 625,277.70 × 168,019.80
  4. Step 4: Simplify right side
    417,466.20x = 105,059,034,098.46
  5. Step 5: Solve for x
    x = 105,059,034,098.46/417,466.20
  6. Step 6: Final answer
    x = 251,658.78

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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.