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Finding the Fourth Proportional to 77,350.63, 116,026.05 and 21,191.23

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Solution

The fourth proportional to 77,350.63, 116,026.05 and 21,191.23 is: 31,786.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,350.63 : 116,026.05 = 21,191.23 : x
  2. Step 2: Convert to fraction form
    77,350.63/116,026.05 = 21,191.23/x
  3. Step 3: Cross multiply
    77,350.63x = 116,026.05 × 21,191.23
  4. Step 4: Simplify right side
    77,350.63x = 2,458,734,711.54
  5. Step 5: Solve for x
    x = 2,458,734,711.54/77,350.63
  6. Step 6: Final answer
    x = 31,786.87

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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.