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Finding the Fourth Proportional to 58,220.31, 80,352.54 and 32,728.78

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Solution

The fourth proportional to 58,220.31, 80,352.54 and 32,728.78 is: 45,170.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,220.31 : 80,352.54 = 32,728.78 : x
  2. Step 2: Convert to fraction form
    58,220.31/80,352.54 = 32,728.78/x
  3. Step 3: Cross multiply
    58,220.31x = 80,352.54 × 32,728.78
  4. Step 4: Simplify right side
    58,220.31x = 2,629,840,704.54
  5. Step 5: Solve for x
    x = 2,629,840,704.54/58,220.31
  6. Step 6: Final answer
    x = 45,170.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.