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Finding the Fourth Proportional to 18,043.68, 24,899.28 and 9,976.88

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Solution

The fourth proportional to 18,043.68, 24,899.28 and 9,976.88 is: 13,767.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,043.68 : 24,899.28 = 9,976.88 : x
  2. Step 2: Convert to fraction form
    18,043.68/24,899.28 = 9,976.88/x
  3. Step 3: Cross multiply
    18,043.68x = 24,899.28 × 9,976.88
  4. Step 4: Simplify right side
    18,043.68x = 248,417,004.15
  5. Step 5: Solve for x
    x = 248,417,004.15/18,043.68
  6. Step 6: Final answer
    x = 13,767.54

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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.