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Finding the Fourth Proportional to 126,553.79, 174,636.73 and 69,961.79

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Solution

The fourth proportional to 126,553.79, 174,636.73 and 69,961.79 is: 96,543.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,553.79 : 174,636.73 = 69,961.79 : x
  2. Step 2: Convert to fraction form
    126,553.79/174,636.73 = 69,961.79/x
  3. Step 3: Cross multiply
    126,553.79x = 174,636.73 × 69,961.79
  4. Step 4: Simplify right side
    126,553.79x = 12,217,898,230.55
  5. Step 5: Solve for x
    x = 12,217,898,230.55/126,553.79
  6. Step 6: Final answer
    x = 96,543.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.