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Finding the Fourth Proportional to 121,075.86, 167,086.92 and 67,365.89

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Solution

The fourth proportional to 121,075.86, 167,086.92 and 67,365.89 is: 92,966.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,075.86 : 167,086.92 = 67,365.89 : x
  2. Step 2: Convert to fraction form
    121,075.86/167,086.92 = 67,365.89/x
  3. Step 3: Cross multiply
    121,075.86x = 167,086.92 × 67,365.89
  4. Step 4: Simplify right side
    121,075.86x = 11,255,958,237.72
  5. Step 5: Solve for x
    x = 11,255,958,237.72/121,075.86
  6. Step 6: Final answer
    x = 92,966.16

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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.