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Finding the Fourth Proportional to 70,841.29, 106,273.46 and 20,926.42

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Solution

The fourth proportional to 70,841.29, 106,273.46 and 20,926.42 is: 31,393.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,841.29 : 106,273.46 = 20,926.42 : x
  2. Step 2: Convert to fraction form
    70,841.29/106,273.46 = 20,926.42/x
  3. Step 3: Cross multiply
    70,841.29x = 106,273.46 × 20,926.42
  4. Step 4: Simplify right side
    70,841.29x = 2,223,923,058.81
  5. Step 5: Solve for x
    x = 2,223,923,058.81/70,841.29
  6. Step 6: Final answer
    x = 31,393.03

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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.