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Finding the Fourth Proportional to 368,665.38, 552,112.20 and 210,414.06

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Solution

The fourth proportional to 368,665.38, 552,112.20 and 210,414.06 is: 315,115.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,665.38 : 552,112.20 = 210,414.06 : x
  2. Step 2: Convert to fraction form
    368,665.38/552,112.20 = 210,414.06/x
  3. Step 3: Cross multiply
    368,665.38x = 552,112.20 × 210,414.06
  4. Step 4: Simplify right side
    368,665.38x = 116,172,169,577.53
  5. Step 5: Solve for x
    x = 116,172,169,577.53/368,665.38
  6. Step 6: Final answer
    x = 315,115.48

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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.