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Finding the Fourth Proportional to 75,866.80, 113,800.20 and 50,983.60

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Solution

The fourth proportional to 75,866.80, 113,800.20 and 50,983.60 is: 76,475.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,866.80 : 113,800.20 = 50,983.60 : x
  2. Step 2: Convert to fraction form
    75,866.80/113,800.20 = 50,983.60/x
  3. Step 3: Cross multiply
    75,866.80x = 113,800.20 × 50,983.60
  4. Step 4: Simplify right side
    75,866.80x = 5,801,943,876.72
  5. Step 5: Solve for x
    x = 5,801,943,876.72/75,866.80
  6. Step 6: Final answer
    x = 76,475.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.