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Finding the Fourth Proportional to 213,657.48, 320,489.28 and 63,862.56

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Solution

The fourth proportional to 213,657.48, 320,489.28 and 63,862.56 is: 95,794.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,657.48 : 320,489.28 = 63,862.56 : x
  2. Step 2: Convert to fraction form
    213,657.48/320,489.28 = 63,862.56/x
  3. Step 3: Cross multiply
    213,657.48x = 320,489.28 × 63,862.56
  4. Step 4: Simplify right side
    213,657.48x = 20,467,265,873.36
  5. Step 5: Solve for x
    x = 20,467,265,873.36/213,657.48
  6. Step 6: Final answer
    x = 95,794.75

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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.