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Finding the Fourth Proportional to 57,939.59, 86,774.51 and 56,343.48

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Solution

The fourth proportional to 57,939.59, 86,774.51 and 56,343.48 is: 84,384.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,939.59 : 86,774.51 = 56,343.48 : x
  2. Step 2: Convert to fraction form
    57,939.59/86,774.51 = 56,343.48/x
  3. Step 3: Cross multiply
    57,939.59x = 86,774.51 × 56,343.48
  4. Step 4: Simplify right side
    57,939.59x = 4,889,177,586.98
  5. Step 5: Solve for x
    x = 4,889,177,586.98/57,939.59
  6. Step 6: Final answer
    x = 84,384.06

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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.