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Finding the Fourth Proportional to 54,576,007.90, 81,864,012.12 and 54,576,007.90

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Solution

The fourth proportional to 54,576,007.90, 81,864,012.12 and 54,576,007.90 is: 81,864,012.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,576,007.90 : 81,864,012.12 = 54,576,007.90 : x
  2. Step 2: Convert to fraction form
    54,576,007.90/81,864,012.12 = 54,576,007.90/x
  3. Step 3: Cross multiply
    54,576,007.90x = 81,864,012.12 × 54,576,007.90
  4. Step 4: Simplify right side
    54,576,007.90x = 4,467,810,972,186,816
  5. Step 5: Solve for x
    x = 4,467,810,972,186,816/54,576,007.90
  6. Step 6: Final answer
    x = 81,864,012.12

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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.