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Finding the Fourth Proportional to 68,417.84, 102,626.76 and 49,816.26

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Solution

The fourth proportional to 68,417.84, 102,626.76 and 49,816.26 is: 74,724.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,417.84 : 102,626.76 = 49,816.26 : x
  2. Step 2: Convert to fraction form
    68,417.84/102,626.76 = 49,816.26/x
  3. Step 3: Cross multiply
    68,417.84x = 102,626.76 × 49,816.26
  4. Step 4: Simplify right side
    68,417.84x = 5,112,481,359.12
  5. Step 5: Solve for x
    x = 5,112,481,359.12/68,417.84
  6. Step 6: Final answer
    x = 74,724.39

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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.