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Finding the Fourth Proportional to 107,318.60, 160,977.75 and 40,758.60

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Solution

The fourth proportional to 107,318.60, 160,977.75 and 40,758.60 is: 61,137.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,318.60 : 160,977.75 = 40,758.60 : x
  2. Step 2: Convert to fraction form
    107,318.60/160,977.75 = 40,758.60/x
  3. Step 3: Cross multiply
    107,318.60x = 160,977.75 × 40,758.60
  4. Step 4: Simplify right side
    107,318.60x = 6,561,227,721.15
  5. Step 5: Solve for x
    x = 6,561,227,721.15/107,318.60
  6. Step 6: Final answer
    x = 61,137.84

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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.