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Finding the Fourth Proportional to 354,515.78, 489,233.29 and 193,374.26

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Solution

The fourth proportional to 354,515.78, 489,233.29 and 193,374.26 is: 266,857.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,515.78 : 489,233.29 = 193,374.26 : x
  2. Step 2: Convert to fraction form
    354,515.78/489,233.29 = 193,374.26/x
  3. Step 3: Cross multiply
    354,515.78x = 489,233.29 × 193,374.26
  4. Step 4: Simplify right side
    354,515.78x = 94,605,125,421.12
  5. Step 5: Solve for x
    x = 94,605,125,421.12/354,515.78
  6. Step 6: Final answer
    x = 266,857.30

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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.