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Finding the Fourth Proportional to 20,059.69, 27,682.81 and 10,985.44

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Solution

The fourth proportional to 20,059.69, 27,682.81 and 10,985.44 is: 15,160.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,059.69 : 27,682.81 = 10,985.44 : x
  2. Step 2: Convert to fraction form
    20,059.69/27,682.81 = 10,985.44/x
  3. Step 3: Cross multiply
    20,059.69x = 27,682.81 × 10,985.44
  4. Step 4: Simplify right side
    20,059.69x = 304,107,848.29
  5. Step 5: Solve for x
    x = 304,107,848.29/20,059.69
  6. Step 6: Final answer
    x = 15,160.15

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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.