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Finding the Fourth Proportional to 47,391,745.20, 71,087,617.80 and 47,391,745.20

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Solution

The fourth proportional to 47,391,745.20, 71,087,617.80 and 47,391,745.20 is: 71,087,617.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,391,745.20 : 71,087,617.80 = 47,391,745.20 : x
  2. Step 2: Convert to fraction form
    47,391,745.20/71,087,617.80 = 47,391,745.20/x
  3. Step 3: Cross multiply
    47,391,745.20x = 71,087,617.80 × 47,391,745.20
  4. Step 4: Simplify right side
    47,391,745.20x = 3,368,966,269,652,584.50
  5. Step 5: Solve for x
    x = 3,368,966,269,652,584.50/47,391,745.20
  6. Step 6: Final answer
    x = 71,087,617.80

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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.