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Finding the Fourth Proportional to 20,765,601.10, 31,148,401.65 and 20,765,601.10

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Solution

The fourth proportional to 20,765,601.10, 31,148,401.65 and 20,765,601.10 is: 31,148,401.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,765,601.10 : 31,148,401.65 = 20,765,601.10 : x
  2. Step 2: Convert to fraction form
    20,765,601.10/31,148,401.65 = 20,765,601.10/x
  3. Step 3: Cross multiply
    20,765,601.10x = 31,148,401.65 × 20,765,601.10
  4. Step 4: Simplify right side
    20,765,601.10x = 646,815,283,566,481.88
  5. Step 5: Solve for x
    x = 646,815,283,566,481.88/20,765,601.10
  6. Step 6: Final answer
    x = 31,148,401.65

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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.