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Finding the Fourth Proportional to 52,395.90, 78,439.41 and 34,593.90

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Solution

The fourth proportional to 52,395.90, 78,439.41 and 34,593.90 is: 51,788.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,395.90 : 78,439.41 = 34,593.90 : x
  2. Step 2: Convert to fraction form
    52,395.90/78,439.41 = 34,593.90/x
  3. Step 3: Cross multiply
    52,395.90x = 78,439.41 × 34,593.90
  4. Step 4: Simplify right side
    52,395.90x = 2,713,525,105.60
  5. Step 5: Solve for x
    x = 2,713,525,105.60/52,395.90
  6. Step 6: Final answer
    x = 51,788.88

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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.