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Finding the Fourth Proportional to 18,406.56, 27,605.34 and 8,536.32

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Solution

The fourth proportional to 18,406.56, 27,605.34 and 8,536.32 is: 12,802.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,406.56 : 27,605.34 = 8,536.32 : x
  2. Step 2: Convert to fraction form
    18,406.56/27,605.34 = 8,536.32/x
  3. Step 3: Cross multiply
    18,406.56x = 27,605.34 × 8,536.32
  4. Step 4: Simplify right side
    18,406.56x = 235,648,015.95
  5. Step 5: Solve for x
    x = 235,648,015.95/18,406.56
  6. Step 6: Final answer
    x = 12,802.39

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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.