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Finding the Fourth Proportional to 407,578.17, 611,170.62 and 170,857.29

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Solution

The fourth proportional to 407,578.17, 611,170.62 and 170,857.29 is: 256,203.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,578.17 : 611,170.62 = 170,857.29 : x
  2. Step 2: Convert to fraction form
    407,578.17/611,170.62 = 170,857.29/x
  3. Step 3: Cross multiply
    407,578.17x = 611,170.62 × 170,857.29
  4. Step 4: Simplify right side
    407,578.17x = 104,422,955,860.82
  5. Step 5: Solve for x
    x = 104,422,955,860.82/407,578.17
  6. Step 6: Final answer
    x = 256,203.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.