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Finding the Fourth Proportional to 16,393.81, 22,625.38 and 9,321.30

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Solution

The fourth proportional to 16,393.81, 22,625.38 and 9,321.30 is: 12,864.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,393.81 : 22,625.38 = 9,321.30 : x
  2. Step 2: Convert to fraction form
    16,393.81/22,625.38 = 9,321.30/x
  3. Step 3: Cross multiply
    16,393.81x = 22,625.38 × 9,321.30
  4. Step 4: Simplify right side
    16,393.81x = 210,897,954.59
  5. Step 5: Solve for x
    x = 210,897,954.59/16,393.81
  6. Step 6: Final answer
    x = 12,864.49

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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.