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Finding the Fourth Proportional to 10,772.58, 16,158.86 and 2,981.18

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Solution

The fourth proportional to 10,772.58, 16,158.86 and 2,981.18 is: 4,471.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,772.58 : 16,158.86 = 2,981.18 : x
  2. Step 2: Convert to fraction form
    10,772.58/16,158.86 = 2,981.18/x
  3. Step 3: Cross multiply
    10,772.58x = 16,158.86 × 2,981.18
  4. Step 4: Simplify right side
    10,772.58x = 48,172,470.25
  5. Step 5: Solve for x
    x = 48,172,470.25/10,772.58
  6. Step 6: Final answer
    x = 4,471.77

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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.