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Finding the Fourth Proportional to 403,578.78, 556,938.69 and 233,911.32

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Solution

The fourth proportional to 403,578.78, 556,938.69 and 233,911.32 is: 322,797.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,578.78 : 556,938.69 = 233,911.32 : x
  2. Step 2: Convert to fraction form
    403,578.78/556,938.69 = 233,911.32/x
  3. Step 3: Cross multiply
    403,578.78x = 556,938.69 × 233,911.32
  4. Step 4: Simplify right side
    403,578.78x = 130,274,264,136.97
  5. Step 5: Solve for x
    x = 130,274,264,136.97/403,578.78
  6. Step 6: Final answer
    x = 322,797.61

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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.