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Finding the Fourth Proportional to 68,728,511.40, 103,092,767.10 and 68,728,511.40

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Solution

The fourth proportional to 68,728,511.40, 103,092,767.10 and 68,728,511.40 is: 103,092,767.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,728,511.40 : 103,092,767.10 = 68,728,511.40 : x
  2. Step 2: Convert to fraction form
    68,728,511.40/103,092,767.10 = 68,728,511.40/x
  3. Step 3: Cross multiply
    68,728,511.40x = 103,092,767.10 × 68,728,511.40
  4. Step 4: Simplify right side
    68,728,511.40x = 7,085,412,418,889,895
  5. Step 5: Solve for x
    x = 7,085,412,418,889,895/68,728,511.40
  6. Step 6: Final answer
    x = 103,092,767.10

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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.