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Finding the Fourth Proportional to 698,656, 964,145.28 and 396,908.32

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Solution

The fourth proportional to 698,656, 964,145.28 and 396,908.32 is: 547,733.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,656 : 964,145.28 = 396,908.32 : x
  2. Step 2: Convert to fraction form
    698,656/964,145.28 = 396,908.32/x
  3. Step 3: Cross multiply
    698,656x = 964,145.28 × 396,908.32
  4. Step 4: Simplify right side
    698,656x = 382,677,283,320.73
  5. Step 5: Solve for x
    x = 382,677,283,320.73/698,656
  6. Step 6: Final answer
    x = 547,733.48

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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.