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Finding the Fourth Proportional to 14,694.71, 20,279.95 and 8,322.42

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Solution

The fourth proportional to 14,694.71, 20,279.95 and 8,322.42 is: 11,485.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,694.71 : 20,279.95 = 8,322.42 : x
  2. Step 2: Convert to fraction form
    14,694.71/20,279.95 = 8,322.42/x
  3. Step 3: Cross multiply
    14,694.71x = 20,279.95 × 8,322.42
  4. Step 4: Simplify right side
    14,694.71x = 168,778,160.08
  5. Step 5: Solve for x
    x = 168,778,160.08/14,694.71
  6. Step 6: Final answer
    x = 11,485.64

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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.