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Finding the Fourth Proportional to 48,857.80, 73,286.70 and 43,220.20

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Solution

The fourth proportional to 48,857.80, 73,286.70 and 43,220.20 is: 64,830.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,857.80 : 73,286.70 = 43,220.20 : x
  2. Step 2: Convert to fraction form
    48,857.80/73,286.70 = 43,220.20/x
  3. Step 3: Cross multiply
    48,857.80x = 73,286.70 × 43,220.20
  4. Step 4: Simplify right side
    48,857.80x = 3,167,465,831.34
  5. Step 5: Solve for x
    x = 3,167,465,831.34/48,857.80
  6. Step 6: Final answer
    x = 64,830.30

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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.