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Finding the Fourth Proportional to 554,310.90, 831,728.79 and 317,853.54

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Solution

The fourth proportional to 554,310.90, 831,728.79 and 317,853.54 is: 476,930.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,310.90 : 831,728.79 = 317,853.54 : x
  2. Step 2: Convert to fraction form
    554,310.90/831,728.79 = 317,853.54/x
  3. Step 3: Cross multiply
    554,310.90x = 831,728.79 × 317,853.54
  4. Step 4: Simplify right side
    554,310.90x = 264,367,940,221.42
  5. Step 5: Solve for x
    x = 264,367,940,221.42/554,310.90
  6. Step 6: Final answer
    x = 476,930.80

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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.