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Finding the Fourth Proportional to 17,876.42, 24,672.42 and 9,921.22

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Solution

The fourth proportional to 17,876.42, 24,672.42 and 9,921.22 is: 13,692.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,876.42 : 24,672.42 = 9,921.22 : x
  2. Step 2: Convert to fraction form
    17,876.42/24,672.42 = 9,921.22/x
  3. Step 3: Cross multiply
    17,876.42x = 24,672.42 × 9,921.22
  4. Step 4: Simplify right side
    17,876.42x = 244,780,506.75
  5. Step 5: Solve for x
    x = 244,780,506.75/17,876.42
  6. Step 6: Final answer
    x = 13,692.93

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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.