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Finding the Fourth Proportional to 61,211.68, 91,731.30 and 48,676.08

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Solution

The fourth proportional to 61,211.68, 91,731.30 and 48,676.08 is: 72,945.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,211.68 : 91,731.30 = 48,676.08 : x
  2. Step 2: Convert to fraction form
    61,211.68/91,731.30 = 48,676.08/x
  3. Step 3: Cross multiply
    61,211.68x = 91,731.30 × 48,676.08
  4. Step 4: Simplify right side
    61,211.68x = 4,465,120,097.30
  5. Step 5: Solve for x
    x = 4,465,120,097.30/61,211.68
  6. Step 6: Final answer
    x = 72,945.56

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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.