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Finding the Fourth Proportional to 74,660.79, 103,031.89 and 41,126.79

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Solution

The fourth proportional to 74,660.79, 103,031.89 and 41,126.79 is: 56,754.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,660.79 : 103,031.89 = 41,126.79 : x
  2. Step 2: Convert to fraction form
    74,660.79/103,031.89 = 41,126.79/x
  3. Step 3: Cross multiply
    74,660.79x = 103,031.89 × 41,126.79
  4. Step 4: Simplify right side
    74,660.79x = 4,237,370,903.33
  5. Step 5: Solve for x
    x = 4,237,370,903.33/74,660.79
  6. Step 6: Final answer
    x = 56,754.97

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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.