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Finding the Fourth Proportional to 121,675.70, 167,895.79 and 67,953.87

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Solution

The fourth proportional to 121,675.70, 167,895.79 and 67,953.87 is: 93,767.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,675.70 : 167,895.79 = 67,953.87 : x
  2. Step 2: Convert to fraction form
    121,675.70/167,895.79 = 67,953.87/x
  3. Step 3: Cross multiply
    121,675.70x = 167,895.79 × 67,953.87
  4. Step 4: Simplify right side
    121,675.70x = 11,409,168,517.32
  5. Step 5: Solve for x
    x = 11,409,168,517.32/121,675.70
  6. Step 6: Final answer
    x = 93,767.02

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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.