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Finding the Fourth Proportional to 51,363.28, 70,878.78 and 28,697.80

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Solution

The fourth proportional to 51,363.28, 70,878.78 and 28,697.80 is: 39,601.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,363.28 : 70,878.78 = 28,697.80 : x
  2. Step 2: Convert to fraction form
    51,363.28/70,878.78 = 28,697.80/x
  3. Step 3: Cross multiply
    51,363.28x = 70,878.78 × 28,697.80
  4. Step 4: Simplify right side
    51,363.28x = 2,034,065,052.68
  5. Step 5: Solve for x
    x = 2,034,065,052.68/51,363.28
  6. Step 6: Final answer
    x = 39,601.54

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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.