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Finding the Fourth Proportional to 8,771.29, 12,100.31 and 5,043.13

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Solution

The fourth proportional to 8,771.29, 12,100.31 and 5,043.13 is: 6,957.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,771.29 : 12,100.31 = 5,043.13 : x
  2. Step 2: Convert to fraction form
    8,771.29/12,100.31 = 5,043.13/x
  3. Step 3: Cross multiply
    8,771.29x = 12,100.31 × 5,043.13
  4. Step 4: Simplify right side
    8,771.29x = 61,023,375.87
  5. Step 5: Solve for x
    x = 61,023,375.87/8,771.29
  6. Step 6: Final answer
    x = 6,957.18

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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.