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Finding the Fourth Proportional to 738,985,137.71, 1,019,757,997.73 and 404,456,978.52

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Solution

The fourth proportional to 738,985,137.71, 1,019,757,997.73 and 404,456,978.52 is: 558,127,921.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,985,137.71 : 1,019,757,997.73 = 404,456,978.52 : x
  2. Step 2: Convert to fraction form
    738,985,137.71/1,019,757,997.73 = 404,456,978.52/x
  3. Step 3: Cross multiply
    738,985,137.71x = 1,019,757,997.73 × 404,456,978.52
  4. Step 4: Simplify right side
    738,985,137.71x = 412,448,238,584,491,904
  5. Step 5: Solve for x
    x = 412,448,238,584,491,904/738,985,137.71
  6. Step 6: Final answer
    x = 558,127,921.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.