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Finding the Fourth Proportional to 539,612.64, 809,388.72 and 165,634.56

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Solution

The fourth proportional to 539,612.64, 809,388.72 and 165,634.56 is: 248,442.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,612.64 : 809,388.72 = 165,634.56 : x
  2. Step 2: Convert to fraction form
    539,612.64/809,388.72 = 165,634.56/x
  3. Step 3: Cross multiply
    539,612.64x = 809,388.72 × 165,634.56
  4. Step 4: Simplify right side
    539,612.64x = 134,062,744,506.16
  5. Step 5: Solve for x
    x = 134,062,744,506.16/539,612.64
  6. Step 6: Final answer
    x = 248,442.56

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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.