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Finding the Fourth Proportional to 68,340.16, 102,420.77 and 36,713.25

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Solution

The fourth proportional to 68,340.16, 102,420.77 and 36,713.25 is: 55,021.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,340.16 : 102,420.77 = 36,713.25 : x
  2. Step 2: Convert to fraction form
    68,340.16/102,420.77 = 36,713.25/x
  3. Step 3: Cross multiply
    68,340.16x = 102,420.77 × 36,713.25
  4. Step 4: Simplify right side
    68,340.16x = 3,760,199,334.20
  5. Step 5: Solve for x
    x = 3,760,199,334.20/68,340.16
  6. Step 6: Final answer
    x = 55,021.81

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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.