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Finding the Fourth Proportional to 61,107.36, 91,469.25 and 42,020.62

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Solution

The fourth proportional to 61,107.36, 91,469.25 and 42,020.62 is: 62,899.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,107.36 : 91,469.25 = 42,020.62 : x
  2. Step 2: Convert to fraction form
    61,107.36/91,469.25 = 42,020.62/x
  3. Step 3: Cross multiply
    61,107.36x = 91,469.25 × 42,020.62
  4. Step 4: Simplify right side
    61,107.36x = 3,843,594,700.99
  5. Step 5: Solve for x
    x = 3,843,594,700.99/61,107.36
  6. Step 6: Final answer
    x = 62,899.05

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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.