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Finding the Fourth Proportional to 65,709.59, 98,567.62 and 18,324.59

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Solution

The fourth proportional to 65,709.59, 98,567.62 and 18,324.59 is: 27,487.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,709.59 : 98,567.62 = 18,324.59 : x
  2. Step 2: Convert to fraction form
    65,709.59/98,567.62 = 18,324.59/x
  3. Step 3: Cross multiply
    65,709.59x = 98,567.62 × 18,324.59
  4. Step 4: Simplify right side
    65,709.59x = 1,806,210,685.13
  5. Step 5: Solve for x
    x = 1,806,210,685.13/65,709.59
  6. Step 6: Final answer
    x = 27,487.78

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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.