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Finding the Fourth Proportional to 34,645.87, 47,811.29 and 18,730.31

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Solution

The fourth proportional to 34,645.87, 47,811.29 and 18,730.31 is: 25,847.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,645.87 : 47,811.29 = 18,730.31 : x
  2. Step 2: Convert to fraction form
    34,645.87/47,811.29 = 18,730.31/x
  3. Step 3: Cross multiply
    34,645.87x = 47,811.29 × 18,730.31
  4. Step 4: Simplify right side
    34,645.87x = 895,520,309.08
  5. Step 5: Solve for x
    x = 895,520,309.08/34,645.87
  6. Step 6: Final answer
    x = 25,847.82

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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.