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Finding the Fourth Proportional to 20,466,046.40, 30,699,069.60 and 20,466,046.40

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Solution

The fourth proportional to 20,466,046.40, 30,699,069.60 and 20,466,046.40 is: 30,699,069.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,466,046.40 : 30,699,069.60 = 20,466,046.40 : x
  2. Step 2: Convert to fraction form
    20,466,046.40/30,699,069.60 = 20,466,046.40/x
  3. Step 3: Cross multiply
    20,466,046.40x = 30,699,069.60 × 20,466,046.40
  4. Step 4: Simplify right side
    20,466,046.40x = 628,288,582,870,429.38
  5. Step 5: Solve for x
    x = 628,288,582,870,429.38/20,466,046.40
  6. Step 6: Final answer
    x = 30,699,069.60

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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.