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Finding the Fourth Proportional to 18,716.08, 25,854.80 and 14,964.16

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Solution

The fourth proportional to 18,716.08, 25,854.80 and 14,964.16 is: 20,671.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,716.08 : 25,854.80 = 14,964.16 : x
  2. Step 2: Convert to fraction form
    18,716.08/25,854.80 = 14,964.16/x
  3. Step 3: Cross multiply
    18,716.08x = 25,854.80 × 14,964.16
  4. Step 4: Simplify right side
    18,716.08x = 386,895,363.97
  5. Step 5: Solve for x
    x = 386,895,363.97/18,716.08
  6. Step 6: Final answer
    x = 20,671.82

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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.