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Finding the Fourth Proportional to 17,711.60, 26,561.19 and 5,228.31

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Solution

The fourth proportional to 17,711.60, 26,561.19 and 5,228.31 is: 7,840.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,711.60 : 26,561.19 = 5,228.31 : x
  2. Step 2: Convert to fraction form
    17,711.60/26,561.19 = 5,228.31/x
  3. Step 3: Cross multiply
    17,711.60x = 26,561.19 × 5,228.31
  4. Step 4: Simplify right side
    17,711.60x = 138,870,135.29
  5. Step 5: Solve for x
    x = 138,870,135.29/17,711.60
  6. Step 6: Final answer
    x = 7,840.63

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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.