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Finding the Fourth Proportional to 265,878.25, 398,989.91 and 159,181.81

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Solution

The fourth proportional to 265,878.25, 398,989.91 and 159,181.81 is: 238,876.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,878.25 : 398,989.91 = 159,181.81 : x
  2. Step 2: Convert to fraction form
    265,878.25/398,989.91 = 159,181.81/x
  3. Step 3: Cross multiply
    265,878.25x = 398,989.91 × 159,181.81
  4. Step 4: Simplify right side
    265,878.25x = 63,511,936,045.54
  5. Step 5: Solve for x
    x = 63,511,936,045.54/265,878.25
  6. Step 6: Final answer
    x = 238,876.01

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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.