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Finding the Fourth Proportional to 27,228,615.30, 38,215,720.80 and 27,228,615.30

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Solution

The fourth proportional to 27,228,615.30, 38,215,720.80 and 27,228,615.30 is: 38,215,720.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,228,615.30 : 38,215,720.80 = 27,228,615.30 : x
  2. Step 2: Convert to fraction form
    27,228,615.30/38,215,720.80 = 27,228,615.30/x
  3. Step 3: Cross multiply
    27,228,615.30x = 38,215,720.80 × 27,228,615.30
  4. Step 4: Simplify right side
    27,228,615.30x = 1,040,561,160,075,408.12
  5. Step 5: Solve for x
    x = 1,040,561,160,075,408.12/27,228,615.30
  6. Step 6: Final answer
    x = 38,215,720.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.