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Finding the Fourth Proportional to 39,952.48, 59,942.48 and 17,781.40

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Solution

The fourth proportional to 39,952.48, 59,942.48 and 17,781.40 is: 26,678.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,952.48 : 59,942.48 = 17,781.40 : x
  2. Step 2: Convert to fraction form
    39,952.48/59,942.48 = 17,781.40/x
  3. Step 3: Cross multiply
    39,952.48x = 59,942.48 × 17,781.40
  4. Step 4: Simplify right side
    39,952.48x = 1,065,861,213.87
  5. Step 5: Solve for x
    x = 1,065,861,213.87/39,952.48
  6. Step 6: Final answer
    x = 26,678.22

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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.