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Finding the Fourth Proportional to 61,200.90, 91,626.15 and 37,668.90

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Solution

The fourth proportional to 61,200.90, 91,626.15 and 37,668.90 is: 56,395.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,200.90 : 91,626.15 = 37,668.90 : x
  2. Step 2: Convert to fraction form
    61,200.90/91,626.15 = 37,668.90/x
  3. Step 3: Cross multiply
    61,200.90x = 91,626.15 × 37,668.90
  4. Step 4: Simplify right side
    61,200.90x = 3,451,456,281.74
  5. Step 5: Solve for x
    x = 3,451,456,281.74/61,200.90
  6. Step 6: Final answer
    x = 56,395.52

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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.