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Finding the Fourth Proportional to 70,284.83, 96,991.39 and 38,453.99

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Solution

The fourth proportional to 70,284.83, 96,991.39 and 38,453.99 is: 53,065.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,284.83 : 96,991.39 = 38,453.99 : x
  2. Step 2: Convert to fraction form
    70,284.83/96,991.39 = 38,453.99/x
  3. Step 3: Cross multiply
    70,284.83x = 96,991.39 × 38,453.99
  4. Step 4: Simplify right side
    70,284.83x = 3,729,705,941.15
  5. Step 5: Solve for x
    x = 3,729,705,941.15/70,284.83
  6. Step 6: Final answer
    x = 53,065.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.