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Finding the Fourth Proportional to 625,361.61, 938,032.52 and 198,891.28

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Solution

The fourth proportional to 625,361.61, 938,032.52 and 198,891.28 is: 298,333.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,361.61 : 938,032.52 = 198,891.28 : x
  2. Step 2: Convert to fraction form
    625,361.61/938,032.52 = 198,891.28/x
  3. Step 3: Cross multiply
    625,361.61x = 938,032.52 × 198,891.28
  4. Step 4: Simplify right side
    625,361.61x = 186,566,488,762.51
  5. Step 5: Solve for x
    x = 186,566,488,762.51/625,361.61
  6. Step 6: Final answer
    x = 298,333.77

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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.