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Finding the Fourth Proportional to 15,125.16, 20,876.22 and 8,841.18

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Solution

The fourth proportional to 15,125.16, 20,876.22 and 8,841.18 is: 12,202.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,125.16 : 20,876.22 = 8,841.18 : x
  2. Step 2: Convert to fraction form
    15,125.16/20,876.22 = 8,841.18/x
  3. Step 3: Cross multiply
    15,125.16x = 20,876.22 × 8,841.18
  4. Step 4: Simplify right side
    15,125.16x = 184,570,418.74
  5. Step 5: Solve for x
    x = 184,570,418.74/15,125.16
  6. Step 6: Final answer
    x = 12,202.87

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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.