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Finding the Fourth Proportional to 16,938.81, 25,416.89 and 8,064.18

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Solution

The fourth proportional to 16,938.81, 25,416.89 and 8,064.18 is: 12,100.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,938.81 : 25,416.89 = 8,064.18 : x
  2. Step 2: Convert to fraction form
    16,938.81/25,416.89 = 8,064.18/x
  3. Step 3: Cross multiply
    16,938.81x = 25,416.89 × 8,064.18
  4. Step 4: Simplify right side
    16,938.81x = 204,966,365.92
  5. Step 5: Solve for x
    x = 204,966,365.92/16,938.81
  6. Step 6: Final answer
    x = 12,100.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.