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Finding the Fourth Proportional to 48,934.40, 73,401.60 and 20,847.20

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Solution

The fourth proportional to 48,934.40, 73,401.60 and 20,847.20 is: 31,270.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,934.40 : 73,401.60 = 20,847.20 : x
  2. Step 2: Convert to fraction form
    48,934.40/73,401.60 = 20,847.20/x
  3. Step 3: Cross multiply
    48,934.40x = 73,401.60 × 20,847.20
  4. Step 4: Simplify right side
    48,934.40x = 1,530,217,835.52
  5. Step 5: Solve for x
    x = 1,530,217,835.52/48,934.40
  6. Step 6: Final answer
    x = 31,270.80

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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.