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Finding the Fourth Proportional to 20,739,101.06, 31,108,651.60 and 20,739,101.06

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Solution

The fourth proportional to 20,739,101.06, 31,108,651.60 and 20,739,101.06 is: 31,108,651.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,739,101.06 : 31,108,651.60 = 20,739,101.06 : x
  2. Step 2: Convert to fraction form
    20,739,101.06/31,108,651.60 = 20,739,101.06/x
  3. Step 3: Cross multiply
    20,739,101.06x = 31,108,651.60 × 20,739,101.06
  4. Step 4: Simplify right side
    20,739,101.06x = 645,165,469,372,730.62
  5. Step 5: Solve for x
    x = 645,165,469,372,730.62/20,739,101.06
  6. Step 6: Final answer
    x = 31,108,651.60

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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.