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Finding the Fourth Proportional to 192,063.03, 287,951.87 and 92,128.07

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Solution

The fourth proportional to 192,063.03, 287,951.87 and 92,128.07 is: 138,123.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,063.03 : 287,951.87 = 92,128.07 : x
  2. Step 2: Convert to fraction form
    192,063.03/287,951.87 = 92,128.07/x
  3. Step 3: Cross multiply
    192,063.03x = 287,951.87 × 92,128.07
  4. Step 4: Simplify right side
    192,063.03x = 26,528,448,826.55
  5. Step 5: Solve for x
    x = 26,528,448,826.55/192,063.03
  6. Step 6: Final answer
    x = 138,123.66

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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.