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Finding the Fourth Proportional to 71,798.51, 107,709.17 and 21,867.03

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Solution

The fourth proportional to 71,798.51, 107,709.17 and 21,867.03 is: 32,804.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,798.51 : 107,709.17 = 21,867.03 : x
  2. Step 2: Convert to fraction form
    71,798.51/107,709.17 = 21,867.03/x
  3. Step 3: Cross multiply
    71,798.51x = 107,709.17 × 21,867.03
  4. Step 4: Simplify right side
    71,798.51x = 2,355,279,542.33
  5. Step 5: Solve for x
    x = 2,355,279,542.33/71,798.51
  6. Step 6: Final answer
    x = 32,804.02

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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.