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Finding the Fourth Proportional to 75,902.60, 113,886.30 and 36,439.40

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Solution

The fourth proportional to 75,902.60, 113,886.30 and 36,439.40 is: 54,674.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,902.60 : 113,886.30 = 36,439.40 : x
  2. Step 2: Convert to fraction form
    75,902.60/113,886.30 = 36,439.40/x
  3. Step 3: Cross multiply
    75,902.60x = 113,886.30 × 36,439.40
  4. Step 4: Simplify right side
    75,902.60x = 4,149,948,440.22
  5. Step 5: Solve for x
    x = 4,149,948,440.22/75,902.60
  6. Step 6: Final answer
    x = 54,674.65

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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.