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Finding the Fourth Proportional to 353,906.78, 488,374.53 and 192,761.06

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Solution

The fourth proportional to 353,906.78, 488,374.53 and 192,761.06 is: 266,001.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,906.78 : 488,374.53 = 192,761.06 : x
  2. Step 2: Convert to fraction form
    353,906.78/488,374.53 = 192,761.06/x
  3. Step 3: Cross multiply
    353,906.78x = 488,374.53 × 192,761.06
  4. Step 4: Simplify right side
    353,906.78x = 94,139,592,079.80
  5. Step 5: Solve for x
    x = 94,139,592,079.80/353,906.78
  6. Step 6: Final answer
    x = 266,001.10

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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.