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Finding the Fourth Proportional to 223,515.28, 335,319.90 and 65,730.52

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Solution

The fourth proportional to 223,515.28, 335,319.90 and 65,730.52 is: 98,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,515.28 : 335,319.90 = 65,730.52 : x
  2. Step 2: Convert to fraction form
    223,515.28/335,319.90 = 65,730.52/x
  3. Step 3: Cross multiply
    223,515.28x = 335,319.90 × 65,730.52
  4. Step 4: Simplify right side
    223,515.28x = 22,040,751,393.35
  5. Step 5: Solve for x
    x = 22,040,751,393.35/223,515.28
  6. Step 6: Final answer
    x = 98,609.60

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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.