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Finding the Fourth Proportional to 231,728.80, 347,593.20 and 73,962.40

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Solution

The fourth proportional to 231,728.80, 347,593.20 and 73,962.40 is: 110,943.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,728.80 : 347,593.20 = 73,962.40 : x
  2. Step 2: Convert to fraction form
    231,728.80/347,593.20 = 73,962.40/x
  3. Step 3: Cross multiply
    231,728.80x = 347,593.20 × 73,962.40
  4. Step 4: Simplify right side
    231,728.80x = 25,708,827,295.68
  5. Step 5: Solve for x
    x = 25,708,827,295.68/231,728.80
  6. Step 6: Final answer
    x = 110,943.60

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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.