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Finding the Fourth Proportional to 14,619.10, 20,159.67 and 8,651.02

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Solution

The fourth proportional to 14,619.10, 20,159.67 and 8,651.02 is: 11,929.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,619.10 : 20,159.67 = 8,651.02 : x
  2. Step 2: Convert to fraction form
    14,619.10/20,159.67 = 8,651.02/x
  3. Step 3: Cross multiply
    14,619.10x = 20,159.67 × 8,651.02
  4. Step 4: Simplify right side
    14,619.10x = 174,401,708.36
  5. Step 5: Solve for x
    x = 174,401,708.36/14,619.10
  6. Step 6: Final answer
    x = 11,929.72

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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.