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Finding the Fourth Proportional to 18,315.91, 25,275.97 and 9,932.41

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Solution

The fourth proportional to 18,315.91, 25,275.97 and 9,932.41 is: 13,706.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,315.91 : 25,275.97 = 9,932.41 : x
  2. Step 2: Convert to fraction form
    18,315.91/25,275.97 = 9,932.41/x
  3. Step 3: Cross multiply
    18,315.91x = 25,275.97 × 9,932.41
  4. Step 4: Simplify right side
    18,315.91x = 251,051,297.19
  5. Step 5: Solve for x
    x = 251,051,297.19/18,315.91
  6. Step 6: Final answer
    x = 13,706.73

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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.