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Finding the Fourth Proportional to 121,436.84, 167,554.95 and 73,016.66

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Solution

The fourth proportional to 121,436.84, 167,554.95 and 73,016.66 is: 100,746.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,436.84 : 167,554.95 = 73,016.66 : x
  2. Step 2: Convert to fraction form
    121,436.84/167,554.95 = 73,016.66/x
  3. Step 3: Cross multiply
    121,436.84x = 167,554.95 × 73,016.66
  4. Step 4: Simplify right side
    121,436.84x = 12,234,302,815.47
  5. Step 5: Solve for x
    x = 12,234,302,815.47/121,436.84
  6. Step 6: Final answer
    x = 100,746.22

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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.