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Finding the Fourth Proportional to 56,685.70, 84,931.35 and 36,954.10

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Solution

The fourth proportional to 56,685.70, 84,931.35 and 36,954.10 is: 55,367.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,685.70 : 84,931.35 = 36,954.10 : x
  2. Step 2: Convert to fraction form
    56,685.70/84,931.35 = 36,954.10/x
  3. Step 3: Cross multiply
    56,685.70x = 84,931.35 × 36,954.10
  4. Step 4: Simplify right side
    56,685.70x = 3,138,561,601.04
  5. Step 5: Solve for x
    x = 3,138,561,601.04/56,685.70
  6. Step 6: Final answer
    x = 55,367.78

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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.