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Finding the Fourth Proportional to 115,967.60, 173,821.80 and 49,396.40

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Solution

The fourth proportional to 115,967.60, 173,821.80 and 49,396.40 is: 74,039.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,967.60 : 173,821.80 = 49,396.40 : x
  2. Step 2: Convert to fraction form
    115,967.60/173,821.80 = 49,396.40/x
  3. Step 3: Cross multiply
    115,967.60x = 173,821.80 × 49,396.40
  4. Step 4: Simplify right side
    115,967.60x = 8,586,171,161.52
  5. Step 5: Solve for x
    x = 8,586,171,161.52/115,967.60
  6. Step 6: Final answer
    x = 74,039.40

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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.