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Finding the Fourth Proportional to 107,858.80, 161,795.40 and 36,780.40

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Solution

The fourth proportional to 107,858.80, 161,795.40 and 36,780.40 is: 55,173.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,858.80 : 161,795.40 = 36,780.40 : x
  2. Step 2: Convert to fraction form
    107,858.80/161,795.40 = 36,780.40/x
  3. Step 3: Cross multiply
    107,858.80x = 161,795.40 × 36,780.40
  4. Step 4: Simplify right side
    107,858.80x = 5,950,899,530.16
  5. Step 5: Solve for x
    x = 5,950,899,530.16/107,858.80
  6. Step 6: Final answer
    x = 55,173.06

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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.