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Finding the Fourth Proportional to 121,361.98, 182,125.53 and 74,471.74

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Solution

The fourth proportional to 121,361.98, 182,125.53 and 74,471.74 is: 111,758.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,361.98 : 182,125.53 = 74,471.74 : x
  2. Step 2: Convert to fraction form
    121,361.98/182,125.53 = 74,471.74/x
  3. Step 3: Cross multiply
    121,361.98x = 182,125.53 × 74,471.74
  4. Step 4: Simplify right side
    121,361.98x = 13,563,205,117.52
  5. Step 5: Solve for x
    x = 13,563,205,117.52/121,361.98
  6. Step 6: Final answer
    x = 111,758.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.