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Finding the Fourth Proportional to 22,148,932.60, 33,223,398.90 and 20,802,615.40

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Solution

The fourth proportional to 22,148,932.60, 33,223,398.90 and 20,802,615.40 is: 31,203,923.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,148,932.60 : 33,223,398.90 = 20,802,615.40 : x
  2. Step 2: Convert to fraction form
    22,148,932.60/33,223,398.90 = 20,802,615.40/x
  3. Step 3: Cross multiply
    22,148,932.60x = 33,223,398.90 × 20,802,615.40
  4. Step 4: Simplify right side
    22,148,932.60x = 691,133,589,597,483
  5. Step 5: Solve for x
    x = 691,133,589,597,483/22,148,932.60
  6. Step 6: Final answer
    x = 31,203,923.10

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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.