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Finding the Fourth Proportional to 383,987.64, 576,238.56 and 159,348.28

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Solution

The fourth proportional to 383,987.64, 576,238.56 and 159,348.28 is: 239,129.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,987.64 : 576,238.56 = 159,348.28 : x
  2. Step 2: Convert to fraction form
    383,987.64/576,238.56 = 159,348.28/x
  3. Step 3: Cross multiply
    383,987.64x = 576,238.56 × 159,348.28
  4. Step 4: Simplify right side
    383,987.64x = 91,822,623,405.68
  5. Step 5: Solve for x
    x = 91,822,623,405.68/383,987.64
  6. Step 6: Final answer
    x = 239,129.11

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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.