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Finding the Fourth Proportional to 14,672.72, 20,220.36 and 10,473.68

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Solution

The fourth proportional to 14,672.72, 20,220.36 and 10,473.68 is: 14,433.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,672.72 : 20,220.36 = 10,473.68 : x
  2. Step 2: Convert to fraction form
    14,672.72/20,220.36 = 10,473.68/x
  3. Step 3: Cross multiply
    14,672.72x = 20,220.36 × 10,473.68
  4. Step 4: Simplify right side
    14,672.72x = 211,781,580.12
  5. Step 5: Solve for x
    x = 211,781,580.12/14,672.72
  6. Step 6: Final answer
    x = 14,433.70

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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.