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Finding the Fourth Proportional to 121,594.70, 167,803.52 and 76,274.60

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Solution

The fourth proportional to 121,594.70, 167,803.52 and 76,274.60 is: 105,260.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,594.70 : 167,803.52 = 76,274.60 : x
  2. Step 2: Convert to fraction form
    121,594.70/167,803.52 = 76,274.60/x
  3. Step 3: Cross multiply
    121,594.70x = 167,803.52 × 76,274.60
  4. Step 4: Simplify right side
    121,594.70x = 12,799,145,146.20
  5. Step 5: Solve for x
    x = 12,799,145,146.20/121,594.70
  6. Step 6: Final answer
    x = 105,260.71

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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.