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Finding the Fourth Proportional to 18,042.87, 24,899.21 and 10,085.11

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Solution

The fourth proportional to 18,042.87, 24,899.21 and 10,085.11 is: 13,917.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,042.87 : 24,899.21 = 10,085.11 : x
  2. Step 2: Convert to fraction form
    18,042.87/24,899.21 = 10,085.11/x
  3. Step 3: Cross multiply
    18,042.87x = 24,899.21 × 10,085.11
  4. Step 4: Simplify right side
    18,042.87x = 251,111,253.64
  5. Step 5: Solve for x
    x = 251,111,253.64/18,042.87
  6. Step 6: Final answer
    x = 13,917.48

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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.