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Finding the Fourth Proportional to 71,160,349.03, 106,749,161.01 and 20,042,367.84

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Solution

The fourth proportional to 71,160,349.03, 106,749,161.01 and 20,042,367.84 is: 30,065,984.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,160,349.03 : 106,749,161.01 = 20,042,367.84 : x
  2. Step 2: Convert to fraction form
    71,160,349.03/106,749,161.01 = 20,042,367.84/x
  3. Step 3: Cross multiply
    71,160,349.03x = 106,749,161.01 × 20,042,367.84
  4. Step 4: Simplify right side
    71,160,349.03x = 2,139,505,951,573,806
  5. Step 5: Solve for x
    x = 2,139,505,951,573,806/71,160,349.03
  6. Step 6: Final answer
    x = 30,065,984.51

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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.