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Finding the Fourth Proportional to 316,659.44, 475,238.78 and 117,036.90

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Solution

The fourth proportional to 316,659.44, 475,238.78 and 117,036.90 is: 175,647.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,659.44 : 475,238.78 = 117,036.90 : x
  2. Step 2: Convert to fraction form
    316,659.44/475,238.78 = 117,036.90/x
  3. Step 3: Cross multiply
    316,659.44x = 475,238.78 × 117,036.90
  4. Step 4: Simplify right side
    316,659.44x = 55,620,472,985.80
  5. Step 5: Solve for x
    x = 55,620,472,985.80/316,659.44
  6. Step 6: Final answer
    x = 175,647.61

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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.