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Finding the Fourth Proportional to 14,776.62, 20,391.76 and 8,062.28

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Solution

The fourth proportional to 14,776.62, 20,391.76 and 8,062.28 is: 11,125.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,776.62 : 20,391.76 = 8,062.28 : x
  2. Step 2: Convert to fraction form
    14,776.62/20,391.76 = 8,062.28/x
  3. Step 3: Cross multiply
    14,776.62x = 20,391.76 × 8,062.28
  4. Step 4: Simplify right side
    14,776.62x = 164,404,078.81
  5. Step 5: Solve for x
    x = 164,404,078.81/14,776.62
  6. Step 6: Final answer
    x = 11,125.96

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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.