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Finding the Fourth Proportional to 22,616.40, 31,211.64 and 15,050.64

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Solution

The fourth proportional to 22,616.40, 31,211.64 and 15,050.64 is: 20,770.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,616.40 : 31,211.64 = 15,050.64 : x
  2. Step 2: Convert to fraction form
    22,616.40/31,211.64 = 15,050.64/x
  3. Step 3: Cross multiply
    22,616.40x = 31,211.64 × 15,050.64
  4. Step 4: Simplify right side
    22,616.40x = 469,755,157.45
  5. Step 5: Solve for x
    x = 469,755,157.45/22,616.40
  6. Step 6: Final answer
    x = 20,770.55

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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.