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Finding the Fourth Proportional to 354,991.98, 489,892.95 and 193,848.96

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Solution

The fourth proportional to 354,991.98, 489,892.95 and 193,848.96 is: 267,513.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,991.98 : 489,892.95 = 193,848.96 : x
  2. Step 2: Convert to fraction form
    354,991.98/489,892.95 = 193,848.96/x
  3. Step 3: Cross multiply
    354,991.98x = 489,892.95 × 193,848.96
  4. Step 4: Simplify right side
    354,991.98x = 94,965,238,868.83
  5. Step 5: Solve for x
    x = 94,965,238,868.83/354,991.98
  6. Step 6: Final answer
    x = 267,513.76

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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.