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Finding the Fourth Proportional to 121,306.67, 181,987.70 and 37,078.82

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Solution

The fourth proportional to 121,306.67, 181,987.70 and 37,078.82 is: 55,626.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,306.67 : 181,987.70 = 37,078.82 : x
  2. Step 2: Convert to fraction form
    121,306.67/181,987.70 = 37,078.82/x
  3. Step 3: Cross multiply
    121,306.67x = 181,987.70 × 37,078.82
  4. Step 4: Simplify right side
    121,306.67x = 6,747,888,075.18
  5. Step 5: Solve for x
    x = 6,747,888,075.18/121,306.67
  6. Step 6: Final answer
    x = 55,626.69

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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.