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Finding the Fourth Proportional to 37,709.70, 52,039.47 and 20,942.70

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Solution

The fourth proportional to 37,709.70, 52,039.47 and 20,942.70 is: 28,900.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,709.70 : 52,039.47 = 20,942.70 : x
  2. Step 2: Convert to fraction form
    37,709.70/52,039.47 = 20,942.70/x
  3. Step 3: Cross multiply
    37,709.70x = 52,039.47 × 20,942.70
  4. Step 4: Simplify right side
    37,709.70x = 1,089,847,008.37
  5. Step 5: Solve for x
    x = 1,089,847,008.37/37,709.70
  6. Step 6: Final answer
    x = 28,900.97

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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.