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Finding the Fourth Proportional to 14,844.05, 20,484.75 and 8,129.68

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Solution

The fourth proportional to 14,844.05, 20,484.75 and 8,129.68 is: 11,218.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,844.05 : 20,484.75 = 8,129.68 : x
  2. Step 2: Convert to fraction form
    14,844.05/20,484.75 = 8,129.68/x
  3. Step 3: Cross multiply
    14,844.05x = 20,484.75 × 8,129.68
  4. Step 4: Simplify right side
    14,844.05x = 166,534,441.65
  5. Step 5: Solve for x
    x = 166,534,441.65/14,844.05
  6. Step 6: Final answer
    x = 11,218.94

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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.