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Finding the Fourth Proportional to 483,722.18, 667,264.18 and 290,078.32

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Solution

The fourth proportional to 483,722.18, 667,264.18 and 290,078.32 is: 400,144.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,722.18 : 667,264.18 = 290,078.32 : x
  2. Step 2: Convert to fraction form
    483,722.18/667,264.18 = 290,078.32/x
  3. Step 3: Cross multiply
    483,722.18x = 667,264.18 × 290,078.32
  4. Step 4: Simplify right side
    483,722.18x = 193,558,872,330.58
  5. Step 5: Solve for x
    x = 193,558,872,330.58/483,722.18
  6. Step 6: Final answer
    x = 400,144.71

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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.