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Finding the Fourth Proportional to 74,064.81, 111,023.37 and 47,788.01

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Solution

The fourth proportional to 74,064.81, 111,023.37 and 47,788.01 is: 71,634.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,064.81 : 111,023.37 = 47,788.01 : x
  2. Step 2: Convert to fraction form
    74,064.81/111,023.37 = 47,788.01/x
  3. Step 3: Cross multiply
    74,064.81x = 111,023.37 × 47,788.01
  4. Step 4: Simplify right side
    74,064.81x = 5,305,585,360.68
  5. Step 5: Solve for x
    x = 5,305,585,360.68/74,064.81
  6. Step 6: Final answer
    x = 71,634.36

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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.