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Finding the Fourth Proportional to 74,569.17, 111,853.74 and 61,393.87

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Solution

The fourth proportional to 74,569.17, 111,853.74 and 61,393.87 is: 92,090.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,569.17 : 111,853.74 = 61,393.87 : x
  2. Step 2: Convert to fraction form
    74,569.17/111,853.74 = 61,393.87/x
  3. Step 3: Cross multiply
    74,569.17x = 111,853.74 × 61,393.87
  4. Step 4: Simplify right side
    74,569.17x = 6,867,133,713.44
  5. Step 5: Solve for x
    x = 6,867,133,713.44/74,569.17
  6. Step 6: Final answer
    x = 92,090.78

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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.