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Finding the Fourth Proportional to 121,134.67, 181,730.76 and 38,028.67

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Solution

The fourth proportional to 121,134.67, 181,730.76 and 38,028.67 is: 57,052.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,134.67 : 181,730.76 = 38,028.67 : x
  2. Step 2: Convert to fraction form
    121,134.67/181,730.76 = 38,028.67/x
  3. Step 3: Cross multiply
    121,134.67x = 181,730.76 × 38,028.67
  4. Step 4: Simplify right side
    121,134.67x = 6,910,979,100.89
  5. Step 5: Solve for x
    x = 6,910,979,100.89/121,134.67
  6. Step 6: Final answer
    x = 57,052.03

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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.