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Finding the Fourth Proportional to 316,001.08, 436,081.44 and 172,761.08

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Solution

The fourth proportional to 316,001.08, 436,081.44 and 172,761.08 is: 238,410.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,001.08 : 436,081.44 = 172,761.08 : x
  2. Step 2: Convert to fraction form
    316,001.08/436,081.44 = 172,761.08/x
  3. Step 3: Cross multiply
    316,001.08x = 436,081.44 × 172,761.08
  4. Step 4: Simplify right side
    316,001.08x = 75,337,900,542.36
  5. Step 5: Solve for x
    x = 75,337,900,542.36/316,001.08
  6. Step 6: Final answer
    x = 238,410.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.