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Finding the Fourth Proportional to 68,687.10, 103,060.28 and 37,090.87

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Solution

The fourth proportional to 68,687.10, 103,060.28 and 37,090.87 is: 55,652.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,687.10 : 103,060.28 = 37,090.87 : x
  2. Step 2: Convert to fraction form
    68,687.10/103,060.28 = 37,090.87/x
  3. Step 3: Cross multiply
    68,687.10x = 103,060.28 × 37,090.87
  4. Step 4: Simplify right side
    68,687.10x = 3,822,595,282.72
  5. Step 5: Solve for x
    x = 3,822,595,282.72/68,687.10
  6. Step 6: Final answer
    x = 55,652.30

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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.