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Finding the Fourth Proportional to 219,373.50, 329,062.08 and 53,161.50

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Solution

The fourth proportional to 219,373.50, 329,062.08 and 53,161.50 is: 79,742.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,373.50 : 329,062.08 = 53,161.50 : x
  2. Step 2: Convert to fraction form
    219,373.50/329,062.08 = 53,161.50/x
  3. Step 3: Cross multiply
    219,373.50x = 329,062.08 × 53,161.50
  4. Step 4: Simplify right side
    219,373.50x = 17,493,433,765.92
  5. Step 5: Solve for x
    x = 17,493,433,765.92/219,373.50
  6. Step 6: Final answer
    x = 79,742.69

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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.