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Finding the Fourth Proportional to 121,553.45, 167,752.18 and 67,848.93

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Solution

The fourth proportional to 121,553.45, 167,752.18 and 67,848.93 is: 93,636.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,553.45 : 167,752.18 = 67,848.93 : x
  2. Step 2: Convert to fraction form
    121,553.45/167,752.18 = 67,848.93/x
  3. Step 3: Cross multiply
    121,553.45x = 167,752.18 × 67,848.93
  4. Step 4: Simplify right side
    121,553.45x = 11,381,805,918.17
  5. Step 5: Solve for x
    x = 11,381,805,918.17/121,553.45
  6. Step 6: Final answer
    x = 93,636.22

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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.