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Finding the Fourth Proportional to 65,261.80, 97,896.42 and 18,511

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Solution

The fourth proportional to 65,261.80, 97,896.42 and 18,511 is: 27,767.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,261.80 : 97,896.42 = 18,511 : x
  2. Step 2: Convert to fraction form
    65,261.80/97,896.42 = 18,511/x
  3. Step 3: Cross multiply
    65,261.80x = 97,896.42 × 18,511
  4. Step 4: Simplify right side
    65,261.80x = 1,812,160,630.62
  5. Step 5: Solve for x
    x = 1,812,160,630.62/65,261.80
  6. Step 6: Final answer
    x = 27,767.56

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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.