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Finding the Fourth Proportional to 16,656.80, 24,972.80 and 10,081.60

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Solution

The fourth proportional to 16,656.80, 24,972.80 and 10,081.60 is: 15,114.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,656.80 : 24,972.80 = 10,081.60 : x
  2. Step 2: Convert to fraction form
    16,656.80/24,972.80 = 10,081.60/x
  3. Step 3: Cross multiply
    16,656.80x = 24,972.80 × 10,081.60
  4. Step 4: Simplify right side
    16,656.80x = 251,765,780.48
  5. Step 5: Solve for x
    x = 251,765,780.48/16,656.80
  6. Step 6: Final answer
    x = 15,114.89

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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.