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Finding the Fourth Proportional to 70,137.37, 105,231.98 and 25,793.11

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Solution

The fourth proportional to 70,137.37, 105,231.98 and 25,793.11 is: 38,699.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,137.37 : 105,231.98 = 25,793.11 : x
  2. Step 2: Convert to fraction form
    70,137.37/105,231.98 = 25,793.11/x
  3. Step 3: Cross multiply
    70,137.37x = 105,231.98 × 25,793.11
  4. Step 4: Simplify right side
    70,137.37x = 2,714,260,035.66
  5. Step 5: Solve for x
    x = 2,714,260,035.66/70,137.37
  6. Step 6: Final answer
    x = 38,699.20

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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.