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Finding the Fourth Proportional to 8,889.60, 12,265.92 and 6,232.80

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Solution

The fourth proportional to 8,889.60, 12,265.92 and 6,232.80 is: 8,600.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,889.60 : 12,265.92 = 6,232.80 : x
  2. Step 2: Convert to fraction form
    8,889.60/12,265.92 = 6,232.80/x
  3. Step 3: Cross multiply
    8,889.60x = 12,265.92 × 6,232.80
  4. Step 4: Simplify right side
    8,889.60x = 76,451,026.18
  5. Step 5: Solve for x
    x = 76,451,026.18/8,889.60
  6. Step 6: Final answer
    x = 8,600.05

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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.