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Finding the Fourth Proportional to 64,498,839.30, 90,553,466.70 and 64,498,839.30

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Solution

The fourth proportional to 64,498,839.30, 90,553,466.70 and 64,498,839.30 is: 90,553,466.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,498,839.30 : 90,553,466.70 = 64,498,839.30 : x
  2. Step 2: Convert to fraction form
    64,498,839.30/90,553,466.70 = 64,498,839.30/x
  3. Step 3: Cross multiply
    64,498,839.30x = 90,553,466.70 × 64,498,839.30
  4. Step 4: Simplify right side
    64,498,839.30x = 5,840,593,496,741,201
  5. Step 5: Solve for x
    x = 5,840,593,496,741,201/64,498,839.30
  6. Step 6: Final answer
    x = 90,553,466.70

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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.