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Finding the Fourth Proportional to 173,167.20, 259,750.80 and 122,428.80

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Solution

The fourth proportional to 173,167.20, 259,750.80 and 122,428.80 is: 183,643.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,167.20 : 259,750.80 = 122,428.80 : x
  2. Step 2: Convert to fraction form
    173,167.20/259,750.80 = 122,428.80/x
  3. Step 3: Cross multiply
    173,167.20x = 259,750.80 × 122,428.80
  4. Step 4: Simplify right side
    173,167.20x = 31,800,978,743.04
  5. Step 5: Solve for x
    x = 31,800,978,743.04/173,167.20
  6. Step 6: Final answer
    x = 183,643.20

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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.