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Finding the Fourth Proportional to 22,124.25, 30,531.48 and 12,188.25

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Solution

The fourth proportional to 22,124.25, 30,531.48 and 12,188.25 is: 16,819.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,124.25 : 30,531.48 = 12,188.25 : x
  2. Step 2: Convert to fraction form
    22,124.25/30,531.48 = 12,188.25/x
  3. Step 3: Cross multiply
    22,124.25x = 30,531.48 × 12,188.25
  4. Step 4: Simplify right side
    22,124.25x = 372,125,311.11
  5. Step 5: Solve for x
    x = 372,125,311.11/22,124.25
  6. Step 6: Final answer
    x = 16,819.79

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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.