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Finding the Fourth Proportional to 50,707.72, 69,976.74 and 28,351.72

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Solution

The fourth proportional to 50,707.72, 69,976.74 and 28,351.72 is: 39,125.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,707.72 : 69,976.74 = 28,351.72 : x
  2. Step 2: Convert to fraction form
    50,707.72/69,976.74 = 28,351.72/x
  3. Step 3: Cross multiply
    50,707.72x = 69,976.74 × 28,351.72
  4. Step 4: Simplify right side
    50,707.72x = 1,983,960,938.99
  5. Step 5: Solve for x
    x = 1,983,960,938.99/50,707.72
  6. Step 6: Final answer
    x = 39,125.42

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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.