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Finding the Fourth Proportional to 121,424.88, 167,578.28 and 73,674.48

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Solution

The fourth proportional to 121,424.88, 167,578.28 and 73,674.48 is: 101,678.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,424.88 : 167,578.28 = 73,674.48 : x
  2. Step 2: Convert to fraction form
    121,424.88/167,578.28 = 73,674.48/x
  3. Step 3: Cross multiply
    121,424.88x = 167,578.28 × 73,674.48
  4. Step 4: Simplify right side
    121,424.88x = 12,346,242,638.29
  5. Step 5: Solve for x
    x = 12,346,242,638.29/121,424.88
  6. Step 6: Final answer
    x = 101,678.03

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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.