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Finding the Fourth Proportional to 194,395.90, 291,550.09 and 69,736.90

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Solution

The fourth proportional to 194,395.90, 291,550.09 and 69,736.90 is: 104,589.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,395.90 : 291,550.09 = 69,736.90 : x
  2. Step 2: Convert to fraction form
    194,395.90/291,550.09 = 69,736.90/x
  3. Step 3: Cross multiply
    194,395.90x = 291,550.09 × 69,736.90
  4. Step 4: Simplify right side
    194,395.90x = 20,331,799,471.32
  5. Step 5: Solve for x
    x = 20,331,799,471.32/194,395.90
  6. Step 6: Final answer
    x = 104,589.65

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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.