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Finding the Fourth Proportional to 296,639.62, 445,034.77 and 86,277.56

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Solution

The fourth proportional to 296,639.62, 445,034.77 and 86,277.56 is: 129,438.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,639.62 : 445,034.77 = 86,277.56 : x
  2. Step 2: Convert to fraction form
    296,639.62/445,034.77 = 86,277.56/x
  3. Step 3: Cross multiply
    296,639.62x = 445,034.77 × 86,277.56
  4. Step 4: Simplify right side
    296,639.62x = 38,396,512,115.20
  5. Step 5: Solve for x
    x = 38,396,512,115.20/296,639.62
  6. Step 6: Final answer
    x = 129,438.25

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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.