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Finding the Fourth Proportional to 70,858.68, 97,789.41 and 39,027.57

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Solution

The fourth proportional to 70,858.68, 97,789.41 and 39,027.57 is: 53,860.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,858.68 : 97,789.41 = 39,027.57 : x
  2. Step 2: Convert to fraction form
    70,858.68/97,789.41 = 39,027.57/x
  3. Step 3: Cross multiply
    70,858.68x = 97,789.41 × 39,027.57
  4. Step 4: Simplify right side
    70,858.68x = 3,816,483,044.03
  5. Step 5: Solve for x
    x = 3,816,483,044.03/70,858.68
  6. Step 6: Final answer
    x = 53,860.49

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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.