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Finding the Fourth Proportional to 60,648.20, 90,842.70 and 50,280.20

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Solution

The fourth proportional to 60,648.20, 90,842.70 and 50,280.20 is: 75,312.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,648.20 : 90,842.70 = 50,280.20 : x
  2. Step 2: Convert to fraction form
    60,648.20/90,842.70 = 50,280.20/x
  3. Step 3: Cross multiply
    60,648.20x = 90,842.70 × 50,280.20
  4. Step 4: Simplify right side
    60,648.20x = 4,567,589,124.54
  5. Step 5: Solve for x
    x = 4,567,589,124.54/60,648.20
  6. Step 6: Final answer
    x = 75,312.86

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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.