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Finding the Fourth Proportional to 50,749.80, 76,124.70 and 39,085.80

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Solution

The fourth proportional to 50,749.80, 76,124.70 and 39,085.80 is: 58,628.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,749.80 : 76,124.70 = 39,085.80 : x
  2. Step 2: Convert to fraction form
    50,749.80/76,124.70 = 39,085.80/x
  3. Step 3: Cross multiply
    50,749.80x = 76,124.70 × 39,085.80
  4. Step 4: Simplify right side
    50,749.80x = 2,975,394,799.26
  5. Step 5: Solve for x
    x = 2,975,394,799.26/50,749.80
  6. Step 6: Final answer
    x = 58,628.70

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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.