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Finding the Fourth Proportional to 316,739.52, 475,182.72 and 92,105.28

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Solution

The fourth proportional to 316,739.52, 475,182.72 and 92,105.28 is: 138,179.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,739.52 : 475,182.72 = 92,105.28 : x
  2. Step 2: Convert to fraction form
    316,739.52/475,182.72 = 92,105.28/x
  3. Step 3: Cross multiply
    316,739.52x = 475,182.72 × 92,105.28
  4. Step 4: Simplify right side
    316,739.52x = 43,766,837,476.76
  5. Step 5: Solve for x
    x = 43,766,837,476.76/316,739.52
  6. Step 6: Final answer
    x = 138,179.28

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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.