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Finding the Fourth Proportional to 121,464.47, 167,620.53 and 67,749.45

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Solution

The fourth proportional to 121,464.47, 167,620.53 and 67,749.45 is: 93,494.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,464.47 : 167,620.53 = 67,749.45 : x
  2. Step 2: Convert to fraction form
    121,464.47/167,620.53 = 67,749.45/x
  3. Step 3: Cross multiply
    121,464.47x = 167,620.53 × 67,749.45
  4. Step 4: Simplify right side
    121,464.47x = 11,356,198,716.21
  5. Step 5: Solve for x
    x = 11,356,198,716.21/121,464.47
  6. Step 6: Final answer
    x = 93,494.00

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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.