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Finding the Fourth Proportional to 173,161.95, 238,922.91 and 105,177.03

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Solution

The fourth proportional to 173,161.95, 238,922.91 and 105,177.03 is: 145,119.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,161.95 : 238,922.91 = 105,177.03 : x
  2. Step 2: Convert to fraction form
    173,161.95/238,922.91 = 105,177.03/x
  3. Step 3: Cross multiply
    173,161.95x = 238,922.91 × 105,177.03
  4. Step 4: Simplify right side
    173,161.95x = 25,129,202,072.76
  5. Step 5: Solve for x
    x = 25,129,202,072.76/173,161.95
  6. Step 6: Final answer
    x = 145,119.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.