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Finding the Fourth Proportional to 22,169.60, 33,254.40 and 16,920.80

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Solution

The fourth proportional to 22,169.60, 33,254.40 and 16,920.80 is: 25,381.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,169.60 : 33,254.40 = 16,920.80 : x
  2. Step 2: Convert to fraction form
    22,169.60/33,254.40 = 16,920.80/x
  3. Step 3: Cross multiply
    22,169.60x = 33,254.40 × 16,920.80
  4. Step 4: Simplify right side
    22,169.60x = 562,691,051.52
  5. Step 5: Solve for x
    x = 562,691,051.52/22,169.60
  6. Step 6: Final answer
    x = 25,381.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.