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Finding the Fourth Proportional to 118,636.52, 178,006.62 and 92,301.80

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Solution

The fourth proportional to 118,636.52, 178,006.62 and 92,301.80 is: 138,493.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,636.52 : 178,006.62 = 92,301.80 : x
  2. Step 2: Convert to fraction form
    118,636.52/178,006.62 = 92,301.80/x
  3. Step 3: Cross multiply
    118,636.52x = 178,006.62 × 92,301.80
  4. Step 4: Simplify right side
    118,636.52x = 16,430,331,437.92
  5. Step 5: Solve for x
    x = 16,430,331,437.92/118,636.52
  6. Step 6: Final answer
    x = 138,493.03

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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.