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Finding the Fourth Proportional to 489,458.54, 675,442.44 and 271,654.53

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Solution

The fourth proportional to 489,458.54, 675,442.44 and 271,654.53 is: 374,877.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,458.54 : 675,442.44 = 271,654.53 : x
  2. Step 2: Convert to fraction form
    489,458.54/675,442.44 = 271,654.53/x
  3. Step 3: Cross multiply
    489,458.54x = 675,442.44 × 271,654.53
  4. Step 4: Simplify right side
    489,458.54x = 183,486,998,580.25
  5. Step 5: Solve for x
    x = 183,486,998,580.25/489,458.54
  6. Step 6: Final answer
    x = 374,877.51

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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.