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Finding the Fourth Proportional to 57,680.70, 86,569.65 and 26,139.30

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Solution

The fourth proportional to 57,680.70, 86,569.65 and 26,139.30 is: 39,230.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,680.70 : 86,569.65 = 26,139.30 : x
  2. Step 2: Convert to fraction form
    57,680.70/86,569.65 = 26,139.30/x
  3. Step 3: Cross multiply
    57,680.70x = 86,569.65 × 26,139.30
  4. Step 4: Simplify right side
    57,680.70x = 2,262,870,052.25
  5. Step 5: Solve for x
    x = 2,262,870,052.25/57,680.70
  6. Step 6: Final answer
    x = 39,230.97

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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.