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Finding the Fourth Proportional to 126,462.72, 174,516.48 and 69,876.48

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Solution

The fourth proportional to 126,462.72, 174,516.48 and 69,876.48 is: 96,428.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,462.72 : 174,516.48 = 69,876.48 : x
  2. Step 2: Convert to fraction form
    126,462.72/174,516.48 = 69,876.48/x
  3. Step 3: Cross multiply
    126,462.72x = 174,516.48 × 69,876.48
  4. Step 4: Simplify right side
    126,462.72x = 12,194,597,324.39
  5. Step 5: Solve for x
    x = 12,194,597,324.39/126,462.72
  6. Step 6: Final answer
    x = 96,428.40

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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.