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Finding the Fourth Proportional to 68,964.65, 103,373.46 and 39,318.65

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Solution

The fourth proportional to 68,964.65, 103,373.46 and 39,318.65 is: 58,936.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,964.65 : 103,373.46 = 39,318.65 : x
  2. Step 2: Convert to fraction form
    68,964.65/103,373.46 = 39,318.65/x
  3. Step 3: Cross multiply
    68,964.65x = 103,373.46 × 39,318.65
  4. Step 4: Simplify right side
    68,964.65x = 4,064,504,376.16
  5. Step 5: Solve for x
    x = 4,064,504,376.16/68,964.65
  6. Step 6: Final answer
    x = 58,936.06

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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.