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Finding the Fourth Proportional to 722,491,901.71, 997,066,230.99 and 404,958,016.48

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Solution

The fourth proportional to 722,491,901.71, 997,066,230.99 and 404,958,016.48 is: 558,857,424.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,491,901.71 : 997,066,230.99 = 404,958,016.48 : x
  2. Step 2: Convert to fraction form
    722,491,901.71/997,066,230.99 = 404,958,016.48/x
  3. Step 3: Cross multiply
    722,491,901.71x = 997,066,230.99 × 404,958,016.48
  4. Step 4: Simplify right side
    722,491,901.71x = 403,769,963,200,899,904
  5. Step 5: Solve for x
    x = 403,769,963,200,899,904/722,491,901.71
  6. Step 6: Final answer
    x = 558,857,424.21

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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.