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Finding the Fourth Proportional to 18,818.93, 25,947.41 and 16,262.12

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Solution

The fourth proportional to 18,818.93, 25,947.41 and 16,262.12 is: 22,422.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.93 : 25,947.41 = 16,262.12 : x
  2. Step 2: Convert to fraction form
    18,818.93/25,947.41 = 16,262.12/x
  3. Step 3: Cross multiply
    18,818.93x = 25,947.41 × 16,262.12
  4. Step 4: Simplify right side
    18,818.93x = 421,959,895.11
  5. Step 5: Solve for x
    x = 421,959,895.11/18,818.93
  6. Step 6: Final answer
    x = 22,422.10

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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.