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Finding the Fourth Proportional to 14,293.86, 19,725.50 and 8,704.86

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Solution

The fourth proportional to 14,293.86, 19,725.50 and 8,704.86 is: 12,012.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,293.86 : 19,725.50 = 8,704.86 : x
  2. Step 2: Convert to fraction form
    14,293.86/19,725.50 = 8,704.86/x
  3. Step 3: Cross multiply
    14,293.86x = 19,725.50 × 8,704.86
  4. Step 4: Simplify right side
    14,293.86x = 171,707,715.93
  5. Step 5: Solve for x
    x = 171,707,715.93/14,293.86
  6. Step 6: Final answer
    x = 12,012.69

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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.