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Finding the Fourth Proportional to 638,757.34, 958,098.20 and 239,364.70

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Solution

The fourth proportional to 638,757.34, 958,098.20 and 239,364.70 is: 359,032.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,757.34 : 958,098.20 = 239,364.70 : x
  2. Step 2: Convert to fraction form
    638,757.34/958,098.20 = 239,364.70/x
  3. Step 3: Cross multiply
    638,757.34x = 958,098.20 × 239,364.70
  4. Step 4: Simplify right side
    638,757.34x = 229,334,888,213.54
  5. Step 5: Solve for x
    x = 229,334,888,213.54/638,757.34
  6. Step 6: Final answer
    x = 359,032.88

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1.5x scale

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.