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Finding the Fourth Proportional to 16,232.25, 22,400.55 and 8,780.25

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Solution

The fourth proportional to 16,232.25, 22,400.55 and 8,780.25 is: 12,116.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,232.25 : 22,400.55 = 8,780.25 : x
  2. Step 2: Convert to fraction form
    16,232.25/22,400.55 = 8,780.25/x
  3. Step 3: Cross multiply
    16,232.25x = 22,400.55 × 8,780.25
  4. Step 4: Simplify right side
    16,232.25x = 196,682,429.14
  5. Step 5: Solve for x
    x = 196,682,429.14/16,232.25
  6. Step 6: Final answer
    x = 12,116.77

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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.