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Finding the Fourth Proportional to 17,856.77, 26,781.77 and 8,969.72

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Solution

The fourth proportional to 17,856.77, 26,781.77 and 8,969.72 is: 13,452.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,856.77 : 26,781.77 = 8,969.72 : x
  2. Step 2: Convert to fraction form
    17,856.77/26,781.77 = 8,969.72/x
  3. Step 3: Cross multiply
    17,856.77x = 26,781.77 × 8,969.72
  4. Step 4: Simplify right side
    17,856.77x = 240,224,799.25
  5. Step 5: Solve for x
    x = 240,224,799.25/17,856.77
  6. Step 6: Final answer
    x = 13,452.87

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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.