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Finding the Fourth Proportional to 1,787,904,049.20, 2,681,856,073.80 and 1,787,904,049.20

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Solution

The fourth proportional to 1,787,904,049.20, 2,681,856,073.80 and 1,787,904,049.20 is: 2,681,856,073.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787,904,049.20 : 2,681,856,073.80 = 1,787,904,049.20 : x
  2. Step 2: Convert to fraction form
    1,787,904,049.20/2,681,856,073.80 = 1,787,904,049.20/x
  3. Step 3: Cross multiply
    1,787,904,049.20x = 2,681,856,073.80 × 1,787,904,049.20
  4. Step 4: Simplify right side
    1,787,904,049.20x = 4,794,901,333,718,634,496
  5. Step 5: Solve for x
    x = 4,794,901,333,718,634,496/1,787,904,049.20
  6. Step 6: Final answer
    x = 2,681,856,073.80

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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.