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Finding the Fourth Proportional to 625,778.17, 938,356.39 and 199,258.31

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Solution

The fourth proportional to 625,778.17, 938,356.39 and 199,258.31 is: 298,788.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,778.17 : 938,356.39 = 199,258.31 : x
  2. Step 2: Convert to fraction form
    625,778.17/938,356.39 = 199,258.31/x
  3. Step 3: Cross multiply
    625,778.17x = 938,356.39 × 199,258.31
  4. Step 4: Simplify right side
    625,778.17x = 186,975,308,449.10
  5. Step 5: Solve for x
    x = 186,975,308,449.10/625,778.17
  6. Step 6: Final answer
    x = 298,788.48

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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.