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Finding the Fourth Proportional to 316,805.31, 475,239.15 and 92,168.01

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Solution

The fourth proportional to 316,805.31, 475,239.15 and 92,168.01 is: 138,261.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,805.31 : 475,239.15 = 92,168.01 : x
  2. Step 2: Convert to fraction form
    316,805.31/475,239.15 = 92,168.01/x
  3. Step 3: Cross multiply
    316,805.31x = 475,239.15 × 92,168.01
  4. Step 4: Simplify right side
    316,805.31x = 43,801,846,729.59
  5. Step 5: Solve for x
    x = 43,801,846,729.59/316,805.31
  6. Step 6: Final answer
    x = 138,261.09

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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.