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Finding the Fourth Proportional to 115,592.40, 173,226.60 and 91,940.40

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Solution

The fourth proportional to 115,592.40, 173,226.60 and 91,940.40 is: 137,781.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,592.40 : 173,226.60 = 91,940.40 : x
  2. Step 2: Convert to fraction form
    115,592.40/173,226.60 = 91,940.40/x
  3. Step 3: Cross multiply
    115,592.40x = 173,226.60 × 91,940.40
  4. Step 4: Simplify right side
    115,592.40x = 15,926,522,894.64
  5. Step 5: Solve for x
    x = 15,926,522,894.64/115,592.40
  6. Step 6: Final answer
    x = 137,781.75

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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.