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Finding the Fourth Proportional to 172,672.08, 238,422.62 and 135,053.52

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Solution

The fourth proportional to 172,672.08, 238,422.62 and 135,053.52 is: 186,479.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,672.08 : 238,422.62 = 135,053.52 : x
  2. Step 2: Convert to fraction form
    172,672.08/238,422.62 = 135,053.52/x
  3. Step 3: Cross multiply
    172,672.08x = 238,422.62 × 135,053.52
  4. Step 4: Simplify right side
    172,672.08x = 32,199,814,078.62
  5. Step 5: Solve for x
    x = 32,199,814,078.62/172,672.08
  6. Step 6: Final answer
    x = 186,479.56

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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.