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Finding the Fourth Proportional to 223,431.20, 335,031.60 and 83,117.60

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Solution

The fourth proportional to 223,431.20, 335,031.60 and 83,117.60 is: 124,633.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,431.20 : 335,031.60 = 83,117.60 : x
  2. Step 2: Convert to fraction form
    223,431.20/335,031.60 = 83,117.60/x
  3. Step 3: Cross multiply
    223,431.20x = 335,031.60 × 83,117.60
  4. Step 4: Simplify right side
    223,431.20x = 27,847,022,516.16
  5. Step 5: Solve for x
    x = 27,847,022,516.16/223,431.20
  6. Step 6: Final answer
    x = 124,633.54

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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.