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Finding the Fourth Proportional to 223,781.40, 335,556.68 and 65,989.35

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Solution

The fourth proportional to 223,781.40, 335,556.68 and 65,989.35 is: 98,949.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,781.40 : 335,556.68 = 65,989.35 : x
  2. Step 2: Convert to fraction form
    223,781.40/335,556.68 = 65,989.35/x
  3. Step 3: Cross multiply
    223,781.40x = 335,556.68 × 65,989.35
  4. Step 4: Simplify right side
    223,781.40x = 22,143,166,871.41
  5. Step 5: Solve for x
    x = 22,143,166,871.41/223,781.40
  6. Step 6: Final answer
    x = 98,949.99

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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.