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Finding the Fourth Proportional to 121,393.98, 167,525.22 and 70,408.86

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Solution

The fourth proportional to 121,393.98, 167,525.22 and 70,408.86 is: 97,165.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,393.98 : 167,525.22 = 70,408.86 : x
  2. Step 2: Convert to fraction form
    121,393.98/167,525.22 = 70,408.86/x
  3. Step 3: Cross multiply
    121,393.98x = 167,525.22 × 70,408.86
  4. Step 4: Simplify right side
    121,393.98x = 11,795,259,761.45
  5. Step 5: Solve for x
    x = 11,795,259,761.45/121,393.98
  6. Step 6: Final answer
    x = 97,165.11

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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.