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Finding the Fourth Proportional to 59,287.20, 88,930.80 and 57,991.20

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Solution

The fourth proportional to 59,287.20, 88,930.80 and 57,991.20 is: 86,986.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,287.20 : 88,930.80 = 57,991.20 : x
  2. Step 2: Convert to fraction form
    59,287.20/88,930.80 = 57,991.20/x
  3. Step 3: Cross multiply
    59,287.20x = 88,930.80 × 57,991.20
  4. Step 4: Simplify right side
    59,287.20x = 5,157,203,808.96
  5. Step 5: Solve for x
    x = 5,157,203,808.96/59,287.20
  6. Step 6: Final answer
    x = 86,986.80

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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.