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Finding the Fourth Proportional to 61,175.67, 91,779.90 and 48,742.56

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Solution

The fourth proportional to 61,175.67, 91,779.90 and 48,742.56 is: 73,126.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,175.67 : 91,779.90 = 48,742.56 : x
  2. Step 2: Convert to fraction form
    61,175.67/91,779.90 = 48,742.56/x
  3. Step 3: Cross multiply
    61,175.67x = 91,779.90 × 48,742.56
  4. Step 4: Simplify right side
    61,175.67x = 4,473,587,282.54
  5. Step 5: Solve for x
    x = 4,473,587,282.54/61,175.67
  6. Step 6: Final answer
    x = 73,126.90

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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.