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Finding the Fourth Proportional to 219,349.53, 329,159.66 and 86,206.41

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Solution

The fourth proportional to 219,349.53, 329,159.66 and 86,206.41 is: 129,362.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,349.53 : 329,159.66 = 86,206.41 : x
  2. Step 2: Convert to fraction form
    219,349.53/329,159.66 = 86,206.41/x
  3. Step 3: Cross multiply
    219,349.53x = 329,159.66 × 86,206.41
  4. Step 4: Simplify right side
    219,349.53x = 28,375,672,174.39
  5. Step 5: Solve for x
    x = 28,375,672,174.39/219,349.53
  6. Step 6: Final answer
    x = 129,362.81

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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.