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Finding the Fourth Proportional to 18,722,434.40, 28,083,651.60 and 18,722,434.40

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Solution

The fourth proportional to 18,722,434.40, 28,083,651.60 and 18,722,434.40 is: 28,083,651.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722,434.40 : 28,083,651.60 = 18,722,434.40 : x
  2. Step 2: Convert to fraction form
    18,722,434.40/28,083,651.60 = 18,722,434.40/x
  3. Step 3: Cross multiply
    18,722,434.40x = 28,083,651.60 × 18,722,434.40
  4. Step 4: Simplify right side
    18,722,434.40x = 525,794,324,793,455
  5. Step 5: Solve for x
    x = 525,794,324,793,455/18,722,434.40
  6. Step 6: Final answer
    x = 28,083,651.60

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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.