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Finding the Fourth Proportional to 14,928.89, 20,602.19 and 8,214.86

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Solution

The fourth proportional to 14,928.89, 20,602.19 and 8,214.86 is: 11,336.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,928.89 : 20,602.19 = 8,214.86 : x
  2. Step 2: Convert to fraction form
    14,928.89/20,602.19 = 8,214.86/x
  3. Step 3: Cross multiply
    14,928.89x = 20,602.19 × 8,214.86
  4. Step 4: Simplify right side
    14,928.89x = 169,244,178.59
  5. Step 5: Solve for x
    x = 169,244,178.59/14,928.89
  6. Step 6: Final answer
    x = 11,336.69

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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.