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Finding the Fourth Proportional to 84,162,453.60, 117,540,456.90 and 84,162,453.60

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Solution

The fourth proportional to 84,162,453.60, 117,540,456.90 and 84,162,453.60 is: 117,540,456.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,162,453.60 : 117,540,456.90 = 84,162,453.60 : x
  2. Step 2: Convert to fraction form
    84,162,453.60/117,540,456.90 = 84,162,453.60/x
  3. Step 3: Cross multiply
    84,162,453.60x = 117,540,456.90 × 84,162,453.60
  4. Step 4: Simplify right side
    84,162,453.60x = 9,892,493,249,969,050
  5. Step 5: Solve for x
    x = 9,892,493,249,969,050/84,162,453.60
  6. Step 6: Final answer
    x = 117,540,456.90

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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.