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Finding the Fourth Proportional to 54,338,743.40, 81,508,115.10 and 54,338,743.40

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Solution

The fourth proportional to 54,338,743.40, 81,508,115.10 and 54,338,743.40 is: 81,508,115.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,338,743.40 : 81,508,115.10 = 54,338,743.40 : x
  2. Step 2: Convert to fraction form
    54,338,743.40/81,508,115.10 = 54,338,743.40/x
  3. Step 3: Cross multiply
    54,338,743.40x = 81,508,115.10 × 54,338,743.40
  4. Step 4: Simplify right side
    54,338,743.40x = 4,429,048,551,436,565
  5. Step 5: Solve for x
    x = 4,429,048,551,436,565/54,338,743.40
  6. Step 6: Final answer
    x = 81,508,115.10

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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.