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Finding the Fourth Proportional to 8,616.57, 11,890.56 and 5,264.99

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Solution

The fourth proportional to 8,616.57, 11,890.56 and 5,264.99 is: 7,265.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.57 : 11,890.56 = 5,264.99 : x
  2. Step 2: Convert to fraction form
    8,616.57/11,890.56 = 5,264.99/x
  3. Step 3: Cross multiply
    8,616.57x = 11,890.56 × 5,264.99
  4. Step 4: Simplify right side
    8,616.57x = 62,603,620.04
  5. Step 5: Solve for x
    x = 62,603,620.04/8,616.57
  6. Step 6: Final answer
    x = 7,265.49

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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.