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Finding the Fourth Proportional to 28,831, 39,780.68 and 17,506.44

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Solution

The fourth proportional to 28,831, 39,780.68 and 17,506.44 is: 24,155.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,831 : 39,780.68 = 17,506.44 : x
  2. Step 2: Convert to fraction form
    28,831/39,780.68 = 17,506.44/x
  3. Step 3: Cross multiply
    28,831x = 39,780.68 × 17,506.44
  4. Step 4: Simplify right side
    28,831x = 696,418,087.58
  5. Step 5: Solve for x
    x = 696,418,087.58/28,831
  6. Step 6: Final answer
    x = 24,155.18

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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.