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Finding the Fourth Proportional to 439,906.60, 606,758.06 and 403,724.91

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Solution

The fourth proportional to 439,906.60, 606,758.06 and 403,724.91 is: 556,853.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,906.60 : 606,758.06 = 403,724.91 : x
  2. Step 2: Convert to fraction form
    439,906.60/606,758.06 = 403,724.91/x
  3. Step 3: Cross multiply
    439,906.60x = 606,758.06 × 403,724.91
  4. Step 4: Simplify right side
    439,906.60x = 244,963,340,765.96
  5. Step 5: Solve for x
    x = 244,963,340,765.96/439,906.60
  6. Step 6: Final answer
    x = 556,853.08

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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.