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Finding the Fourth Proportional to 8,866.64, 13,245.70 and 6,380.24

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Solution

The fourth proportional to 8,866.64, 13,245.70 and 6,380.24 is: 9,531.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,866.64 : 13,245.70 = 6,380.24 : x
  2. Step 2: Convert to fraction form
    8,866.64/13,245.70 = 6,380.24/x
  3. Step 3: Cross multiply
    8,866.64x = 13,245.70 × 6,380.24
  4. Step 4: Simplify right side
    8,866.64x = 84,510,744.97
  5. Step 5: Solve for x
    x = 84,510,744.97/8,866.64
  6. Step 6: Final answer
    x = 9,531.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.