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Finding the Fourth Proportional to 14,847.65, 20,489.76 and 8,133.52

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Solution

The fourth proportional to 14,847.65, 20,489.76 and 8,133.52 is: 11,224.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,847.65 : 20,489.76 = 8,133.52 : x
  2. Step 2: Convert to fraction form
    14,847.65/20,489.76 = 8,133.52/x
  3. Step 3: Cross multiply
    14,847.65x = 20,489.76 × 8,133.52
  4. Step 4: Simplify right side
    14,847.65x = 166,653,795.92
  5. Step 5: Solve for x
    x = 166,653,795.92/14,847.65
  6. Step 6: Final answer
    x = 11,224.26

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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.