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Finding the Fourth Proportional to 18,642.44, 25,726.47 and 10,684.46

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Solution

The fourth proportional to 18,642.44, 25,726.47 and 10,684.46 is: 14,744.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,642.44 : 25,726.47 = 10,684.46 : x
  2. Step 2: Convert to fraction form
    18,642.44/25,726.47 = 10,684.46/x
  3. Step 3: Cross multiply
    18,642.44x = 25,726.47 × 10,684.46
  4. Step 4: Simplify right side
    18,642.44x = 274,873,439.66
  5. Step 5: Solve for x
    x = 274,873,439.66/18,642.44
  6. Step 6: Final answer
    x = 14,744.50

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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.