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Finding the Fourth Proportional to 16,470.75, 22,729.60 and 8,917.08

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Solution

The fourth proportional to 16,470.75, 22,729.60 and 8,917.08 is: 12,305.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,470.75 : 22,729.60 = 8,917.08 : x
  2. Step 2: Convert to fraction form
    16,470.75/22,729.60 = 8,917.08/x
  3. Step 3: Cross multiply
    16,470.75x = 22,729.60 × 8,917.08
  4. Step 4: Simplify right side
    16,470.75x = 202,681,661.57
  5. Step 5: Solve for x
    x = 202,681,661.57/16,470.75
  6. Step 6: Final answer
    x = 12,305.55

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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.