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Finding the Fourth Proportional to 56,900.58, 78,559.79 and 50,921.97

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Solution

The fourth proportional to 56,900.58, 78,559.79 and 50,921.97 is: 70,305.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,900.58 : 78,559.79 = 50,921.97 : x
  2. Step 2: Convert to fraction form
    56,900.58/78,559.79 = 50,921.97/x
  3. Step 3: Cross multiply
    56,900.58x = 78,559.79 × 50,921.97
  4. Step 4: Simplify right side
    56,900.58x = 4,000,419,014.98
  5. Step 5: Solve for x
    x = 4,000,419,014.98/56,900.58
  6. Step 6: Final answer
    x = 70,305.42

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1.5x scale

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.