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Finding the Fourth Proportional to 74,675.80, 111,967.71 and 36,676.72

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Solution

The fourth proportional to 74,675.80, 111,967.71 and 36,676.72 is: 54,992.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,675.80 : 111,967.71 = 36,676.72 : x
  2. Step 2: Convert to fraction form
    74,675.80/111,967.71 = 36,676.72/x
  3. Step 3: Cross multiply
    74,675.80x = 111,967.71 × 36,676.72
  4. Step 4: Simplify right side
    74,675.80x = 4,106,608,348.71
  5. Step 5: Solve for x
    x = 4,106,608,348.71/74,675.80
  6. Step 6: Final answer
    x = 54,992.49

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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.