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Finding the Fourth Proportional to 628,514.11, 867,369.15 and 356,593.48

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Solution

The fourth proportional to 628,514.11, 867,369.15 and 356,593.48 is: 492,110.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,514.11 : 867,369.15 = 356,593.48 : x
  2. Step 2: Convert to fraction form
    628,514.11/867,369.15 = 356,593.48/x
  3. Step 3: Cross multiply
    628,514.11x = 867,369.15 × 356,593.48
  4. Step 4: Simplify right side
    628,514.11x = 309,298,183,643.14
  5. Step 5: Solve for x
    x = 309,298,183,643.14/628,514.11
  6. Step 6: Final answer
    x = 492,110.17

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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.