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Finding the Fourth Proportional to 13,655.58, 20,486.49 and 5,866.62

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Solution

The fourth proportional to 13,655.58, 20,486.49 and 5,866.62 is: 8,801.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.58 : 20,486.49 = 5,866.62 : x
  2. Step 2: Convert to fraction form
    13,655.58/20,486.49 = 5,866.62/x
  3. Step 3: Cross multiply
    13,655.58x = 20,486.49 × 5,866.62
  4. Step 4: Simplify right side
    13,655.58x = 120,186,451.96
  5. Step 5: Solve for x
    x = 120,186,451.96/13,655.58
  6. Step 6: Final answer
    x = 8,801.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.