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Finding the Fourth Proportional to 492,717.70, 739,076.55 and 193,098.70

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Solution

The fourth proportional to 492,717.70, 739,076.55 and 193,098.70 is: 289,648.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,717.70 : 739,076.55 = 193,098.70 : x
  2. Step 2: Convert to fraction form
    492,717.70/739,076.55 = 193,098.70/x
  3. Step 3: Cross multiply
    492,717.70x = 739,076.55 × 193,098.70
  4. Step 4: Simplify right side
    492,717.70x = 142,714,721,005.49
  5. Step 5: Solve for x
    x = 142,714,721,005.49/492,717.70
  6. Step 6: Final answer
    x = 289,648.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.