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Finding the Fourth Proportional to 65,098.56, 97,639.20 and 18,355.20

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Solution

The fourth proportional to 65,098.56, 97,639.20 and 18,355.20 is: 27,530.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,098.56 : 97,639.20 = 18,355.20 : x
  2. Step 2: Convert to fraction form
    65,098.56/97,639.20 = 18,355.20/x
  3. Step 3: Cross multiply
    65,098.56x = 97,639.20 × 18,355.20
  4. Step 4: Simplify right side
    65,098.56x = 1,792,187,043.84
  5. Step 5: Solve for x
    x = 1,792,187,043.84/65,098.56
  6. Step 6: Final answer
    x = 27,530.36

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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.