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Finding the Fourth Proportional to 625,777.88, 938,356.25 and 199,258.16

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Solution

The fourth proportional to 625,777.88, 938,356.25 and 199,258.16 is: 298,788.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,777.88 : 938,356.25 = 199,258.16 : x
  2. Step 2: Convert to fraction form
    625,777.88/938,356.25 = 199,258.16/x
  3. Step 3: Cross multiply
    625,777.88x = 938,356.25 × 199,258.16
  4. Step 4: Simplify right side
    625,777.88x = 186,975,134,111.43
  5. Step 5: Solve for x
    x = 186,975,134,111.43/625,777.88
  6. Step 6: Final answer
    x = 298,788.34

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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.