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Finding the Fourth Proportional to 707,685.91, 976,599.84 and 385,401.39

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Solution

The fourth proportional to 707,685.91, 976,599.84 and 385,401.39 is: 531,850.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,685.91 : 976,599.84 = 385,401.39 : x
  2. Step 2: Convert to fraction form
    707,685.91/976,599.84 = 385,401.39/x
  3. Step 3: Cross multiply
    707,685.91x = 976,599.84 × 385,401.39
  4. Step 4: Simplify right side
    707,685.91x = 376,382,936,918.28
  5. Step 5: Solve for x
    x = 376,382,936,918.28/707,685.91
  6. Step 6: Final answer
    x = 531,850.26

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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.