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Finding the Fourth Proportional to 17,793.70, 26,691.82 and 5,312.71

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Solution

The fourth proportional to 17,793.70, 26,691.82 and 5,312.71 is: 7,969.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,793.70 : 26,691.82 = 5,312.71 : x
  2. Step 2: Convert to fraction form
    17,793.70/26,691.82 = 5,312.71/x
  3. Step 3: Cross multiply
    17,793.70x = 26,691.82 × 5,312.71
  4. Step 4: Simplify right side
    17,793.70x = 141,805,919.12
  5. Step 5: Solve for x
    x = 141,805,919.12/17,793.70
  6. Step 6: Final answer
    x = 7,969.45

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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.