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Finding the Fourth Proportional to 57,987.76, 87,010.84 and 43,226.32

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Solution

The fourth proportional to 57,987.76, 87,010.84 and 43,226.32 is: 64,861.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,987.76 : 87,010.84 = 43,226.32 : x
  2. Step 2: Convert to fraction form
    57,987.76/87,010.84 = 43,226.32/x
  3. Step 3: Cross multiply
    57,987.76x = 87,010.84 × 43,226.32
  4. Step 4: Simplify right side
    57,987.76x = 3,761,158,413.31
  5. Step 5: Solve for x
    x = 3,761,158,413.31/57,987.76
  6. Step 6: Final answer
    x = 64,861.25

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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.