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Finding the Fourth Proportional to 625,361.87, 938,032.89 and 198,891.53

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Solution

The fourth proportional to 625,361.87, 938,032.89 and 198,891.53 is: 298,334.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,361.87 : 938,032.89 = 198,891.53 : x
  2. Step 2: Convert to fraction form
    625,361.87/938,032.89 = 198,891.53/x
  3. Step 3: Cross multiply
    625,361.87x = 938,032.89 × 198,891.53
  4. Step 4: Simplify right side
    625,361.87x = 186,566,799,027.50
  5. Step 5: Solve for x
    x = 186,566,799,027.50/625,361.87
  6. Step 6: Final answer
    x = 298,334.15

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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.