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Finding the Fourth Proportional to 708,694,863.43, 978,087,239.90 and 411,273,244.39

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Solution

The fourth proportional to 708,694,863.43, 978,087,239.90 and 411,273,244.39 is: 567,608,336.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    708,694,863.43 : 978,087,239.90 = 411,273,244.39 : x
  2. Step 2: Convert to fraction form
    708,694,863.43/978,087,239.90 = 411,273,244.39/x
  3. Step 3: Cross multiply
    708,694,863.43x = 978,087,239.90 × 411,273,244.39
  4. Step 4: Simplify right side
    708,694,863.43x = 402,261,112,448,076,864
  5. Step 5: Solve for x
    x = 402,261,112,448,076,864/708,694,863.43
  6. Step 6: Final answer
    x = 567,608,336.40

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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.