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Finding the Fourth Proportional to 403,718.31, 557,089.52 and 248,644.89

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Solution

The fourth proportional to 403,718.31, 557,089.52 and 248,644.89 is: 343,104.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,718.31 : 557,089.52 = 248,644.89 : x
  2. Step 2: Convert to fraction form
    403,718.31/557,089.52 = 248,644.89/x
  3. Step 3: Cross multiply
    403,718.31x = 557,089.52 × 248,644.89
  4. Step 4: Simplify right side
    403,718.31x = 138,517,461,177.33
  5. Step 5: Solve for x
    x = 138,517,461,177.33/403,718.31
  6. Step 6: Final answer
    x = 343,104.23

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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.