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Finding the Fourth Proportional to 121,793.18, 167,921.63 and 93,147.98

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Solution

The fourth proportional to 121,793.18, 167,921.63 and 93,147.98 is: 128,427.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,793.18 : 167,921.63 = 93,147.98 : x
  2. Step 2: Convert to fraction form
    121,793.18/167,921.63 = 93,147.98/x
  3. Step 3: Cross multiply
    121,793.18x = 167,921.63 × 93,147.98
  4. Step 4: Simplify right side
    121,793.18x = 15,641,559,327.46
  5. Step 5: Solve for x
    x = 15,641,559,327.46/121,793.18
  6. Step 6: Final answer
    x = 128,427.22

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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.