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Finding the Fourth Proportional to 8,716.20, 12,037.20 and 5,734.20

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Solution

The fourth proportional to 8,716.20, 12,037.20 and 5,734.20 is: 7,919.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,716.20 : 12,037.20 = 5,734.20 : x
  2. Step 2: Convert to fraction form
    8,716.20/12,037.20 = 5,734.20/x
  3. Step 3: Cross multiply
    8,716.20x = 12,037.20 × 5,734.20
  4. Step 4: Simplify right side
    8,716.20x = 69,023,712.24
  5. Step 5: Solve for x
    x = 69,023,712.24/8,716.20
  6. Step 6: Final answer
    x = 7,919.01

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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.