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Finding the Fourth Proportional to 58,220.88, 80,344.80 and 31,724.88

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Solution

The fourth proportional to 58,220.88, 80,344.80 and 31,724.88 is: 43,780.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,220.88 : 80,344.80 = 31,724.88 : x
  2. Step 2: Convert to fraction form
    58,220.88/80,344.80 = 31,724.88/x
  3. Step 3: Cross multiply
    58,220.88x = 80,344.80 × 31,724.88
  4. Step 4: Simplify right side
    58,220.88x = 2,548,929,138.62
  5. Step 5: Solve for x
    x = 2,548,929,138.62/58,220.88
  6. Step 6: Final answer
    x = 43,780.33

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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.