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Finding the Fourth Proportional to 60,978.77, 91,468.15 and 40,197.41

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Solution

The fourth proportional to 60,978.77, 91,468.15 and 40,197.41 is: 60,296.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,978.77 : 91,468.15 = 40,197.41 : x
  2. Step 2: Convert to fraction form
    60,978.77/91,468.15 = 40,197.41/x
  3. Step 3: Cross multiply
    60,978.77x = 91,468.15 × 40,197.41
  4. Step 4: Simplify right side
    60,978.77x = 3,676,782,727.49
  5. Step 5: Solve for x
    x = 3,676,782,727.49/60,978.77
  6. Step 6: Final answer
    x = 60,296.11

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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.