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Finding the Fourth Proportional to 61,132.58, 91,698.87 and 40,351.22

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Solution

The fourth proportional to 61,132.58, 91,698.87 and 40,351.22 is: 60,526.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,132.58 : 91,698.87 = 40,351.22 : x
  2. Step 2: Convert to fraction form
    61,132.58/91,698.87 = 40,351.22/x
  3. Step 3: Cross multiply
    61,132.58x = 91,698.87 × 40,351.22
  4. Step 4: Simplify right side
    61,132.58x = 3,700,161,277.12
  5. Step 5: Solve for x
    x = 3,700,161,277.12/61,132.58
  6. Step 6: Final answer
    x = 60,526.83

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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.