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Finding the Fourth Proportional to 121,570.53, 167,767.52 and 67,855.53

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Solution

The fourth proportional to 121,570.53, 167,767.52 and 67,855.53 is: 93,640.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,570.53 : 167,767.52 = 67,855.53 : x
  2. Step 2: Convert to fraction form
    121,570.53/167,767.52 = 67,855.53/x
  3. Step 3: Cross multiply
    121,570.53x = 167,767.52 × 67,855.53
  4. Step 4: Simplify right side
    121,570.53x = 11,383,953,986.39
  5. Step 5: Solve for x
    x = 11,383,953,986.39/121,570.53
  6. Step 6: Final answer
    x = 93,640.74

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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.