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Finding the Fourth Proportional to 341,938.10, 512,907.15 and 92,620.10

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Solution

The fourth proportional to 341,938.10, 512,907.15 and 92,620.10 is: 138,930.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,938.10 : 512,907.15 = 92,620.10 : x
  2. Step 2: Convert to fraction form
    341,938.10/512,907.15 = 92,620.10/x
  3. Step 3: Cross multiply
    341,938.10x = 512,907.15 × 92,620.10
  4. Step 4: Simplify right side
    341,938.10x = 47,505,511,523.72
  5. Step 5: Solve for x
    x = 47,505,511,523.72/341,938.10
  6. Step 6: Final answer
    x = 138,930.15

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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.