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Finding the Fourth Proportional to 17,479.70, 24,139.12 and 14,947.18

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Solution

The fourth proportional to 17,479.70, 24,139.12 and 14,947.18 is: 20,641.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,479.70 : 24,139.12 = 14,947.18 : x
  2. Step 2: Convert to fraction form
    17,479.70/24,139.12 = 14,947.18/x
  3. Step 3: Cross multiply
    17,479.70x = 24,139.12 × 14,947.18
  4. Step 4: Simplify right side
    17,479.70x = 360,811,771.68
  5. Step 5: Solve for x
    x = 360,811,771.68/17,479.70
  6. Step 6: Final answer
    x = 20,641.76

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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.