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Finding the Fourth Proportional to 208,167.48, 312,215.70 and 75,021.24

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Solution

The fourth proportional to 208,167.48, 312,215.70 and 75,021.24 is: 112,519.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,167.48 : 312,215.70 = 75,021.24 : x
  2. Step 2: Convert to fraction form
    208,167.48/312,215.70 = 75,021.24/x
  3. Step 3: Cross multiply
    208,167.48x = 312,215.70 × 75,021.24
  4. Step 4: Simplify right side
    208,167.48x = 23,422,808,961.47
  5. Step 5: Solve for x
    x = 23,422,808,961.47/208,167.48
  6. Step 6: Final answer
    x = 112,519.06

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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.