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Finding the Fourth Proportional to 398,138.60, 597,207.90 and 176,522.60

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Solution

The fourth proportional to 398,138.60, 597,207.90 and 176,522.60 is: 264,783.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,138.60 : 597,207.90 = 176,522.60 : x
  2. Step 2: Convert to fraction form
    398,138.60/597,207.90 = 176,522.60/x
  3. Step 3: Cross multiply
    398,138.60x = 597,207.90 × 176,522.60
  4. Step 4: Simplify right side
    398,138.60x = 105,420,691,248.54
  5. Step 5: Solve for x
    x = 105,420,691,248.54/398,138.60
  6. Step 6: Final answer
    x = 264,783.90

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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.