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Finding the Fourth Proportional to 325,991.52, 488,987.28 and 89,335.44

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Solution

The fourth proportional to 325,991.52, 488,987.28 and 89,335.44 is: 134,003.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,991.52 : 488,987.28 = 89,335.44 : x
  2. Step 2: Convert to fraction form
    325,991.52/488,987.28 = 89,335.44/x
  3. Step 3: Cross multiply
    325,991.52x = 488,987.28 × 89,335.44
  4. Step 4: Simplify right side
    325,991.52x = 43,683,893,813.20
  5. Step 5: Solve for x
    x = 43,683,893,813.20/325,991.52
  6. Step 6: Final answer
    x = 134,003.16

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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.