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Finding the Fourth Proportional to 354,554.22, 489,274.11 and 193,411.74

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Solution

The fourth proportional to 354,554.22, 489,274.11 and 193,411.74 is: 266,902.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,554.22 : 489,274.11 = 193,411.74 : x
  2. Step 2: Convert to fraction form
    354,554.22/489,274.11 = 193,411.74/x
  3. Step 3: Cross multiply
    354,554.22x = 489,274.11 × 193,411.74
  4. Step 4: Simplify right side
    354,554.22x = 94,631,356,952.05
  5. Step 5: Solve for x
    x = 94,631,356,952.05/354,554.22
  6. Step 6: Final answer
    x = 266,902.36

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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.