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Finding the Fourth Proportional to 48,866.46, 67,420.26 and 28,716.90

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Solution

The fourth proportional to 48,866.46, 67,420.26 and 28,716.90 is: 39,620.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,866.46 : 67,420.26 = 28,716.90 : x
  2. Step 2: Convert to fraction form
    48,866.46/67,420.26 = 28,716.90/x
  3. Step 3: Cross multiply
    48,866.46x = 67,420.26 × 28,716.90
  4. Step 4: Simplify right side
    48,866.46x = 1,936,100,864.39
  5. Step 5: Solve for x
    x = 1,936,100,864.39/48,866.46
  6. Step 6: Final answer
    x = 39,620.24

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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.