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Finding the Fourth Proportional to 107,625.40, 161,054.10 and 68,201.40

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Solution

The fourth proportional to 107,625.40, 161,054.10 and 68,201.40 is: 102,058.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,625.40 : 161,054.10 = 68,201.40 : x
  2. Step 2: Convert to fraction form
    107,625.40/161,054.10 = 68,201.40/x
  3. Step 3: Cross multiply
    107,625.40x = 161,054.10 × 68,201.40
  4. Step 4: Simplify right side
    107,625.40x = 10,984,115,095.74
  5. Step 5: Solve for x
    x = 10,984,115,095.74/107,625.40
  6. Step 6: Final answer
    x = 102,058.76

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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.