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Finding the Fourth Proportional to 121,473.88, 167,524.81 and 76,156.81

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Solution

The fourth proportional to 121,473.88, 167,524.81 and 76,156.81 is: 105,027.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,473.88 : 167,524.81 = 76,156.81 : x
  2. Step 2: Convert to fraction form
    121,473.88/167,524.81 = 76,156.81/x
  3. Step 3: Cross multiply
    121,473.88x = 167,524.81 × 76,156.81
  4. Step 4: Simplify right side
    121,473.88x = 12,758,154,516.25
  5. Step 5: Solve for x
    x = 12,758,154,516.25/121,473.88
  6. Step 6: Final answer
    x = 105,027.97

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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.