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Finding the Fourth Proportional to 14,965.98, 20,652.66 and 8,251.45

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Solution

The fourth proportional to 14,965.98, 20,652.66 and 8,251.45 is: 11,386.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,965.98 : 20,652.66 = 8,251.45 : x
  2. Step 2: Convert to fraction form
    14,965.98/20,652.66 = 8,251.45/x
  3. Step 3: Cross multiply
    14,965.98x = 20,652.66 × 8,251.45
  4. Step 4: Simplify right side
    14,965.98x = 170,414,391.36
  5. Step 5: Solve for x
    x = 170,414,391.36/14,965.98
  6. Step 6: Final answer
    x = 11,386.78

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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.