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Finding the Fourth Proportional to 18,473.82, 25,493.48 and 10,515.86

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Solution

The fourth proportional to 18,473.82, 25,493.48 and 10,515.86 is: 14,511.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,473.82 : 25,493.48 = 10,515.86 : x
  2. Step 2: Convert to fraction form
    18,473.82/25,493.48 = 10,515.86/x
  3. Step 3: Cross multiply
    18,473.82x = 25,493.48 × 10,515.86
  4. Step 4: Simplify right side
    18,473.82x = 268,085,866.59
  5. Step 5: Solve for x
    x = 268,085,866.59/18,473.82
  6. Step 6: Final answer
    x = 14,511.66

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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.