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Finding the Fourth Proportional to 121,131.72, 181,734.72 and 62,009.28

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Solution

The fourth proportional to 121,131.72, 181,734.72 and 62,009.28 is: 93,032.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,131.72 : 181,734.72 = 62,009.28 : x
  2. Step 2: Convert to fraction form
    121,131.72/181,734.72 = 62,009.28/x
  3. Step 3: Cross multiply
    121,131.72x = 181,734.72 × 62,009.28
  4. Step 4: Simplify right side
    121,131.72x = 11,269,239,138.20
  5. Step 5: Solve for x
    x = 11,269,239,138.20/121,131.72
  6. Step 6: Final answer
    x = 93,032.93

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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.