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Finding the Fourth Proportional to 417,260.40, 625,631.40 and 239,679.60

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Solution

The fourth proportional to 417,260.40, 625,631.40 and 239,679.60 is: 359,370.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,260.40 : 625,631.40 = 239,679.60 : x
  2. Step 2: Convert to fraction form
    417,260.40/625,631.40 = 239,679.60/x
  3. Step 3: Cross multiply
    417,260.40x = 625,631.40 × 239,679.60
  4. Step 4: Simplify right side
    417,260.40x = 149,951,083,699.44
  5. Step 5: Solve for x
    x = 149,951,083,699.44/417,260.40
  6. Step 6: Final answer
    x = 359,370.51

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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.