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Finding the Fourth Proportional to 68,047.62, 93,875.13 and 39,736.50

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Solution

The fourth proportional to 68,047.62, 93,875.13 and 39,736.50 is: 54,818.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,047.62 : 93,875.13 = 39,736.50 : x
  2. Step 2: Convert to fraction form
    68,047.62/93,875.13 = 39,736.50/x
  3. Step 3: Cross multiply
    68,047.62x = 93,875.13 × 39,736.50
  4. Step 4: Simplify right side
    68,047.62x = 3,730,269,103.25
  5. Step 5: Solve for x
    x = 3,730,269,103.25/68,047.62
  6. Step 6: Final answer
    x = 54,818.51

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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.