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Finding the Fourth Proportional to 68,165.16, 94,061.22 and 39,865.32

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Solution

The fourth proportional to 68,165.16, 94,061.22 and 39,865.32 is: 55,010.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,165.16 : 94,061.22 = 39,865.32 : x
  2. Step 2: Convert to fraction form
    68,165.16/94,061.22 = 39,865.32/x
  3. Step 3: Cross multiply
    68,165.16x = 94,061.22 × 39,865.32
  4. Step 4: Simplify right side
    68,165.16x = 3,749,780,634.89
  5. Step 5: Solve for x
    x = 3,749,780,634.89/68,165.16
  6. Step 6: Final answer
    x = 55,010.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.