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Finding the Fourth Proportional to 383,398.72, 574,899.36 and 117,105.28

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Solution

The fourth proportional to 383,398.72, 574,899.36 and 117,105.28 is: 175,597.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,398.72 : 574,899.36 = 117,105.28 : x
  2. Step 2: Convert to fraction form
    383,398.72/574,899.36 = 117,105.28/x
  3. Step 3: Cross multiply
    383,398.72x = 574,899.36 × 117,105.28
  4. Step 4: Simplify right side
    383,398.72x = 67,323,750,524.62
  5. Step 5: Solve for x
    x = 67,323,750,524.62/383,398.72
  6. Step 6: Final answer
    x = 175,597.22

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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.