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Finding the Fourth Proportional to 70,121.58, 105,213.20 and 36,833.91

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Solution

The fourth proportional to 70,121.58, 105,213.20 and 36,833.91 is: 55,267.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,121.58 : 105,213.20 = 36,833.91 : x
  2. Step 2: Convert to fraction form
    70,121.58/105,213.20 = 36,833.91/x
  3. Step 3: Cross multiply
    70,121.58x = 105,213.20 × 36,833.91
  4. Step 4: Simplify right side
    70,121.58x = 3,875,413,355.44
  5. Step 5: Solve for x
    x = 3,875,413,355.44/70,121.58
  6. Step 6: Final answer
    x = 55,267.06

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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.