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Finding the Fourth Proportional to 11,061.20, 16,591.80 and 10,216.40

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Solution

The fourth proportional to 11,061.20, 16,591.80 and 10,216.40 is: 15,324.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,061.20 : 16,591.80 = 10,216.40 : x
  2. Step 2: Convert to fraction form
    11,061.20/16,591.80 = 10,216.40/x
  3. Step 3: Cross multiply
    11,061.20x = 16,591.80 × 10,216.40
  4. Step 4: Simplify right side
    11,061.20x = 169,508,465.52
  5. Step 5: Solve for x
    x = 169,508,465.52/11,061.20
  6. Step 6: Final answer
    x = 15,324.60

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1.5x scale

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.