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Finding the Fourth Proportional to 70,134.80, 105,233.40 and 36,846.80

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Solution

The fourth proportional to 70,134.80, 105,233.40 and 36,846.80 is: 55,286.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,134.80 : 105,233.40 = 36,846.80 : x
  2. Step 2: Convert to fraction form
    70,134.80/105,233.40 = 36,846.80/x
  3. Step 3: Cross multiply
    70,134.80x = 105,233.40 × 36,846.80
  4. Step 4: Simplify right side
    70,134.80x = 3,877,514,043.12
  5. Step 5: Solve for x
    x = 3,877,514,043.12/70,134.80
  6. Step 6: Final answer
    x = 55,286.59

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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.