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Finding the Fourth Proportional to 14,605.11, 20,153.61 and 8,941.46

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Solution

The fourth proportional to 14,605.11, 20,153.61 and 8,941.46 is: 12,338.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,605.11 : 20,153.61 = 8,941.46 : x
  2. Step 2: Convert to fraction form
    14,605.11/20,153.61 = 8,941.46/x
  3. Step 3: Cross multiply
    14,605.11x = 20,153.61 × 8,941.46
  4. Step 4: Simplify right side
    14,605.11x = 180,202,596.90
  5. Step 5: Solve for x
    x = 180,202,596.90/14,605.11
  6. Step 6: Final answer
    x = 12,338.33

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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.