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Finding the Fourth Proportional to 493,286.60, 739,929.90 and 448,963.40

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Solution

The fourth proportional to 493,286.60, 739,929.90 and 448,963.40 is: 673,445.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,286.60 : 739,929.90 = 448,963.40 : x
  2. Step 2: Convert to fraction form
    493,286.60/739,929.90 = 448,963.40/x
  3. Step 3: Cross multiply
    493,286.60x = 739,929.90 × 448,963.40
  4. Step 4: Simplify right side
    493,286.60x = 332,201,443,665.66
  5. Step 5: Solve for x
    x = 332,201,443,665.66/493,286.60
  6. Step 6: Final answer
    x = 673,445.10

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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.