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Finding the Fourth Proportional to 51,067.19, 70,472.70 and 28,711.19

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Solution

The fourth proportional to 51,067.19, 70,472.70 and 28,711.19 is: 39,621.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,067.19 : 70,472.70 = 28,711.19 : x
  2. Step 2: Convert to fraction form
    51,067.19/70,472.70 = 28,711.19/x
  3. Step 3: Cross multiply
    51,067.19x = 70,472.70 × 28,711.19
  4. Step 4: Simplify right side
    51,067.19x = 2,023,354,727.15
  5. Step 5: Solve for x
    x = 2,023,354,727.15/51,067.19
  6. Step 6: Final answer
    x = 39,621.43

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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.