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Finding the Fourth Proportional to 48,920.40, 73,380.60 and 48,613.20

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Solution

The fourth proportional to 48,920.40, 73,380.60 and 48,613.20 is: 72,919.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,920.40 : 73,380.60 = 48,613.20 : x
  2. Step 2: Convert to fraction form
    48,920.40/73,380.60 = 48,613.20/x
  3. Step 3: Cross multiply
    48,920.40x = 73,380.60 × 48,613.20
  4. Step 4: Simplify right side
    48,920.40x = 3,567,265,783.92
  5. Step 5: Solve for x
    x = 3,567,265,783.92/48,920.40
  6. Step 6: Final answer
    x = 72,919.80

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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.