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Finding the Fourth Proportional to 34,861.66, 48,109.80 and 18,947.13

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Solution

The fourth proportional to 34,861.66, 48,109.80 and 18,947.13 is: 26,147.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,861.66 : 48,109.80 = 18,947.13 : x
  2. Step 2: Convert to fraction form
    34,861.66/48,109.80 = 18,947.13/x
  3. Step 3: Cross multiply
    34,861.66x = 48,109.80 × 18,947.13
  4. Step 4: Simplify right side
    34,861.66x = 911,542,689.55
  5. Step 5: Solve for x
    x = 911,542,689.55/34,861.66
  6. Step 6: Final answer
    x = 26,147.43

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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.