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Finding the Fourth Proportional to 50,749.70, 76,015.20 and 42,001.70

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Solution

The fourth proportional to 50,749.70, 76,015.20 and 42,001.70 is: 62,912.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,749.70 : 76,015.20 = 42,001.70 : x
  2. Step 2: Convert to fraction form
    50,749.70/76,015.20 = 42,001.70/x
  3. Step 3: Cross multiply
    50,749.70x = 76,015.20 × 42,001.70
  4. Step 4: Simplify right side
    50,749.70x = 3,192,767,625.84
  5. Step 5: Solve for x
    x = 3,192,767,625.84/50,749.70
  6. Step 6: Final answer
    x = 62,912.05

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1.5x scale

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.