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Finding the Fourth Proportional to 52,756.44, 72,801.16 and 28,878.59

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Solution

The fourth proportional to 52,756.44, 72,801.16 and 28,878.59 is: 39,850.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,756.44 : 72,801.16 = 28,878.59 : x
  2. Step 2: Convert to fraction form
    52,756.44/72,801.16 = 28,878.59/x
  3. Step 3: Cross multiply
    52,756.44x = 72,801.16 × 28,878.59
  4. Step 4: Simplify right side
    52,756.44x = 2,102,394,414.96
  5. Step 5: Solve for x
    x = 2,102,394,414.96/52,756.44
  6. Step 6: Final answer
    x = 39,850.95

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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.