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Finding the Fourth Proportional to 70,086.78, 105,161.04 and 36,799.11

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Solution

The fourth proportional to 70,086.78, 105,161.04 and 36,799.11 is: 55,214.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,086.78 : 105,161.04 = 36,799.11 : x
  2. Step 2: Convert to fraction form
    70,086.78/105,161.04 = 36,799.11/x
  3. Step 3: Cross multiply
    70,086.78x = 105,161.04 × 36,799.11
  4. Step 4: Simplify right side
    70,086.78x = 3,869,832,678.67
  5. Step 5: Solve for x
    x = 3,869,832,678.67/70,086.78
  6. Step 6: Final answer
    x = 55,214.87

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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.