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Finding the Fourth Proportional to 65,102.56, 97,645.20 and 18,359.20

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Solution

The fourth proportional to 65,102.56, 97,645.20 and 18,359.20 is: 27,536.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,102.56 : 97,645.20 = 18,359.20 : x
  2. Step 2: Convert to fraction form
    65,102.56/97,645.20 = 18,359.20/x
  3. Step 3: Cross multiply
    65,102.56x = 97,645.20 × 18,359.20
  4. Step 4: Simplify right side
    65,102.56x = 1,792,687,755.84
  5. Step 5: Solve for x
    x = 1,792,687,755.84/65,102.56
  6. Step 6: Final answer
    x = 27,536.36

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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.