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Finding the Fourth Proportional to 219,364.63, 329,046.98 and 79,123.24

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Solution

The fourth proportional to 219,364.63, 329,046.98 and 79,123.24 is: 118,684.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,364.63 : 329,046.98 = 79,123.24 : x
  2. Step 2: Convert to fraction form
    219,364.63/329,046.98 = 79,123.24/x
  3. Step 3: Cross multiply
    219,364.63x = 329,046.98 × 79,123.24
  4. Step 4: Simplify right side
    219,364.63x = 26,035,261,722.39
  5. Step 5: Solve for x
    x = 26,035,261,722.39/219,364.63
  6. Step 6: Final answer
    x = 118,684.87

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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.