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Finding the Fourth Proportional to 210,844.44, 316,266.27 and 68,689.55

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Solution

The fourth proportional to 210,844.44, 316,266.27 and 68,689.55 is: 103,034.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,844.44 : 316,266.27 = 68,689.55 : x
  2. Step 2: Convert to fraction form
    210,844.44/316,266.27 = 68,689.55/x
  3. Step 3: Cross multiply
    210,844.44x = 316,266.27 × 68,689.55
  4. Step 4: Simplify right side
    210,844.44x = 21,724,187,766.48
  5. Step 5: Solve for x
    x = 21,724,187,766.48/210,844.44
  6. Step 6: Final answer
    x = 103,034.20

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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.