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Finding the Fourth Proportional to 18,043.20, 24,899.76 and 10,085.76

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Solution

The fourth proportional to 18,043.20, 24,899.76 and 10,085.76 is: 13,918.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,043.20 : 24,899.76 = 10,085.76 : x
  2. Step 2: Convert to fraction form
    18,043.20/24,899.76 = 10,085.76/x
  3. Step 3: Cross multiply
    18,043.20x = 24,899.76 × 10,085.76
  4. Step 4: Simplify right side
    18,043.20x = 251,133,003.42
  5. Step 5: Solve for x
    x = 251,133,003.42/18,043.20
  6. Step 6: Final answer
    x = 13,918.43

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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.