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Finding the Fourth Proportional to 60,766.90, 91,323.15 and 53,163.70

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Solution

The fourth proportional to 60,766.90, 91,323.15 and 53,163.70 is: 79,896.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,766.90 : 91,323.15 = 53,163.70 : x
  2. Step 2: Convert to fraction form
    60,766.90/91,323.15 = 53,163.70/x
  3. Step 3: Cross multiply
    60,766.90x = 91,323.15 × 53,163.70
  4. Step 4: Simplify right side
    60,766.90x = 4,855,076,549.66
  5. Step 5: Solve for x
    x = 4,855,076,549.66/60,766.90
  6. Step 6: Final answer
    x = 79,896.73

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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.