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Finding the Fourth Proportional to 68,551.40, 94,601.58 and 39,872.54

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Solution

The fourth proportional to 68,551.40, 94,601.58 and 39,872.54 is: 55,024.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,551.40 : 94,601.58 = 39,872.54 : x
  2. Step 2: Convert to fraction form
    68,551.40/94,601.58 = 39,872.54/x
  3. Step 3: Cross multiply
    68,551.40x = 94,601.58 × 39,872.54
  4. Step 4: Simplify right side
    68,551.40x = 3,772,005,282.61
  5. Step 5: Solve for x
    x = 3,772,005,282.61/68,551.40
  6. Step 6: Final answer
    x = 55,024.48

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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.