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Finding the Fourth Proportional to 7,916.56, 11,791.07 and 7,500.16

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Solution

The fourth proportional to 7,916.56, 11,791.07 and 7,500.16 is: 11,170.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,916.56 : 11,791.07 = 7,500.16 : x
  2. Step 2: Convert to fraction form
    7,916.56/11,791.07 = 7,500.16/x
  3. Step 3: Cross multiply
    7,916.56x = 11,791.07 × 7,500.16
  4. Step 4: Simplify right side
    7,916.56x = 88,434,911.57
  5. Step 5: Solve for x
    x = 88,434,911.57/7,916.56
  6. Step 6: Final answer
    x = 11,170.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.