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Finding the Fourth Proportional to 14,916.96, 20,580.48 and 8,624.88

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Solution

The fourth proportional to 14,916.96, 20,580.48 and 8,624.88 is: 11,899.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,916.96 : 20,580.48 = 8,624.88 : x
  2. Step 2: Convert to fraction form
    14,916.96/20,580.48 = 8,624.88/x
  3. Step 3: Cross multiply
    14,916.96x = 20,580.48 × 8,624.88
  4. Step 4: Simplify right side
    14,916.96x = 177,504,170.34
  5. Step 5: Solve for x
    x = 177,504,170.34/14,916.96
  6. Step 6: Final answer
    x = 11,899.49

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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.