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Finding the Fourth Proportional to 121,043.86, 167,028.80 and 70,046.46

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Solution

The fourth proportional to 121,043.86, 167,028.80 and 70,046.46 is: 96,657.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,043.86 : 167,028.80 = 70,046.46 : x
  2. Step 2: Convert to fraction form
    121,043.86/167,028.80 = 70,046.46/x
  3. Step 3: Cross multiply
    121,043.86x = 167,028.80 × 70,046.46
  4. Step 4: Simplify right side
    121,043.86x = 11,699,776,158.05
  5. Step 5: Solve for x
    x = 11,699,776,158.05/121,043.86
  6. Step 6: Final answer
    x = 96,657.33

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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.