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Finding the Fourth Proportional to 482,793.83, 666,808.45 and 317,958.66

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Solution

The fourth proportional to 482,793.83, 666,808.45 and 317,958.66 is: 439,147.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,793.83 : 666,808.45 = 317,958.66 : x
  2. Step 2: Convert to fraction form
    482,793.83/666,808.45 = 317,958.66/x
  3. Step 3: Cross multiply
    482,793.83x = 666,808.45 × 317,958.66
  4. Step 4: Simplify right side
    482,793.83x = 212,017,521,238.68
  5. Step 5: Solve for x
    x = 212,017,521,238.68/482,793.83
  6. Step 6: Final answer
    x = 439,147.12

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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.