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Finding the Fourth Proportional to 368,159.21, 551,517.11 and 190,782.58

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Solution

The fourth proportional to 368,159.21, 551,517.11 and 190,782.58 is: 285,799.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,159.21 : 551,517.11 = 190,782.58 : x
  2. Step 2: Convert to fraction form
    368,159.21/551,517.11 = 190,782.58/x
  3. Step 3: Cross multiply
    368,159.21x = 551,517.11 × 190,782.58
  4. Step 4: Simplify right side
    368,159.21x = 105,219,853,448.45
  5. Step 5: Solve for x
    x = 105,219,853,448.45/368,159.21
  6. Step 6: Final answer
    x = 285,799.87

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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.