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Finding the Fourth Proportional to 61,039.80, 91,452.06 and 53,458.79

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Solution

The fourth proportional to 61,039.80, 91,452.06 and 53,458.79 is: 80,093.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,039.80 : 91,452.06 = 53,458.79 : x
  2. Step 2: Convert to fraction form
    61,039.80/91,452.06 = 53,458.79/x
  3. Step 3: Cross multiply
    61,039.80x = 91,452.06 × 53,458.79
  4. Step 4: Simplify right side
    61,039.80x = 4,888,916,013.35
  5. Step 5: Solve for x
    x = 4,888,916,013.35/61,039.80
  6. Step 6: Final answer
    x = 80,093.91

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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.