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Finding the Fourth Proportional to 219,957.62, 329,936.30 and 79,716.02

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Solution

The fourth proportional to 219,957.62, 329,936.30 and 79,716.02 is: 119,573.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,957.62 : 329,936.30 = 79,716.02 : x
  2. Step 2: Convert to fraction form
    219,957.62/329,936.30 = 79,716.02/x
  3. Step 3: Cross multiply
    219,957.62x = 329,936.30 × 79,716.02
  4. Step 4: Simplify right side
    219,957.62x = 26,301,208,689.53
  5. Step 5: Solve for x
    x = 26,301,208,689.53/219,957.62
  6. Step 6: Final answer
    x = 119,573.98

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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.