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Finding the Fourth Proportional to 14,646.81, 20,212.61 and 7,932.49

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Solution

The fourth proportional to 14,646.81, 20,212.61 and 7,932.49 is: 10,946.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,646.81 : 20,212.61 = 7,932.49 : x
  2. Step 2: Convert to fraction form
    14,646.81/20,212.61 = 7,932.49/x
  3. Step 3: Cross multiply
    14,646.81x = 20,212.61 × 7,932.49
  4. Step 4: Simplify right side
    14,646.81x = 160,336,360.28
  5. Step 5: Solve for x
    x = 160,336,360.28/14,646.81
  6. Step 6: Final answer
    x = 10,946.85

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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.