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Finding the Fourth Proportional to 68,706.66, 103,059.16 and 38,723.16

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Solution

The fourth proportional to 68,706.66, 103,059.16 and 38,723.16 is: 58,084.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,706.66 : 103,059.16 = 38,723.16 : x
  2. Step 2: Convert to fraction form
    68,706.66/103,059.16 = 38,723.16/x
  3. Step 3: Cross multiply
    68,706.66x = 103,059.16 × 38,723.16
  4. Step 4: Simplify right side
    68,706.66x = 3,990,776,342.15
  5. Step 5: Solve for x
    x = 3,990,776,342.15/68,706.66
  6. Step 6: Final answer
    x = 58,084.27

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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.