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Finding the Fourth Proportional to 386,201.60, 580,857.60 and 345,766.40

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Solution

The fourth proportional to 386,201.60, 580,857.60 and 345,766.40 is: 520,041.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,201.60 : 580,857.60 = 345,766.40 : x
  2. Step 2: Convert to fraction form
    386,201.60/580,857.60 = 345,766.40/x
  3. Step 3: Cross multiply
    386,201.60x = 580,857.60 × 345,766.40
  4. Step 4: Simplify right side
    386,201.60x = 200,841,041,264.64
  5. Step 5: Solve for x
    x = 200,841,041,264.64/386,201.60
  6. Step 6: Final answer
    x = 520,041.97

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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.