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Finding the Fourth Proportional to 6,876.56, 9,489.86 and 3,732.95

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Solution

The fourth proportional to 6,876.56, 9,489.86 and 3,732.95 is: 5,151.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,876.56 : 9,489.86 = 3,732.95 : x
  2. Step 2: Convert to fraction form
    6,876.56/9,489.86 = 3,732.95/x
  3. Step 3: Cross multiply
    6,876.56x = 9,489.86 × 3,732.95
  4. Step 4: Simplify right side
    6,876.56x = 35,425,191.95
  5. Step 5: Solve for x
    x = 35,425,191.95/6,876.56
  6. Step 6: Final answer
    x = 5,151.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.