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Finding the Fourth Proportional to 57,986.76, 87,009.34 and 43,225.32

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Solution

The fourth proportional to 57,986.76, 87,009.34 and 43,225.32 is: 64,859.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,986.76 : 87,009.34 = 43,225.32 : x
  2. Step 2: Convert to fraction form
    57,986.76/87,009.34 = 43,225.32/x
  3. Step 3: Cross multiply
    57,986.76x = 87,009.34 × 43,225.32
  4. Step 4: Simplify right side
    57,986.76x = 3,761,006,564.49
  5. Step 5: Solve for x
    x = 3,761,006,564.49/57,986.76
  6. Step 6: Final answer
    x = 64,859.75

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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.