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Finding the Fourth Proportional to 368,069.91, 551,711.19 and 168,090.63

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Solution

The fourth proportional to 368,069.91, 551,711.19 and 168,090.63 is: 251,956.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,069.91 : 551,711.19 = 168,090.63 : x
  2. Step 2: Convert to fraction form
    368,069.91/551,711.19 = 168,090.63/x
  3. Step 3: Cross multiply
    368,069.91x = 551,711.19 × 168,090.63
  4. Step 4: Simplify right side
    368,069.91x = 92,737,481,505.15
  5. Step 5: Solve for x
    x = 92,737,481,505.15/368,069.91
  6. Step 6: Final answer
    x = 251,956.16

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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.