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Finding the Fourth Proportional to 28,843.88, 39,822.57 and 22,116.57

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Solution

The fourth proportional to 28,843.88, 39,822.57 and 22,116.57 is: 30,534.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,843.88 : 39,822.57 = 22,116.57 : x
  2. Step 2: Convert to fraction form
    28,843.88/39,822.57 = 22,116.57/x
  3. Step 3: Cross multiply
    28,843.88x = 39,822.57 × 22,116.57
  4. Step 4: Simplify right side
    28,843.88x = 880,738,656.98
  5. Step 5: Solve for x
    x = 880,738,656.98/28,843.88
  6. Step 6: Final answer
    x = 30,534.68

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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.