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Finding the Fourth Proportional to 11,560.68, 15,954.92 and 7,087.41

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Solution

The fourth proportional to 11,560.68, 15,954.92 and 7,087.41 is: 9,781.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,560.68 : 15,954.92 = 7,087.41 : x
  2. Step 2: Convert to fraction form
    11,560.68/15,954.92 = 7,087.41/x
  3. Step 3: Cross multiply
    11,560.68x = 15,954.92 × 7,087.41
  4. Step 4: Simplify right side
    11,560.68x = 113,079,059.56
  5. Step 5: Solve for x
    x = 113,079,059.56/11,560.68
  6. Step 6: Final answer
    x = 9,781.35

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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.