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Finding the Fourth Proportional to 60,491.40, 90,629.10 and 29,257.80

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Solution

The fourth proportional to 60,491.40, 90,629.10 and 29,257.80 is: 43,834.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,491.40 : 90,629.10 = 29,257.80 : x
  2. Step 2: Convert to fraction form
    60,491.40/90,629.10 = 29,257.80/x
  3. Step 3: Cross multiply
    60,491.40x = 90,629.10 × 29,257.80
  4. Step 4: Simplify right side
    60,491.40x = 2,651,608,081.98
  5. Step 5: Solve for x
    x = 2,651,608,081.98/60,491.40
  6. Step 6: Final answer
    x = 43,834.46

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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.