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Finding the Fourth Proportional to 14,956.17, 20,639.52 and 8,672.19

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Solution

The fourth proportional to 14,956.17, 20,639.52 and 8,672.19 is: 11,967.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,956.17 : 20,639.52 = 8,672.19 : x
  2. Step 2: Convert to fraction form
    14,956.17/20,639.52 = 8,672.19/x
  3. Step 3: Cross multiply
    14,956.17x = 20,639.52 × 8,672.19
  4. Step 4: Simplify right side
    14,956.17x = 178,989,795.59
  5. Step 5: Solve for x
    x = 178,989,795.59/14,956.17
  6. Step 6: Final answer
    x = 11,967.62

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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.