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Finding the Fourth Proportional to 14,767.64, 20,379.09 and 8,053.28

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Solution

The fourth proportional to 14,767.64, 20,379.09 and 8,053.28 is: 11,113.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,767.64 : 20,379.09 = 8,053.28 : x
  2. Step 2: Convert to fraction form
    14,767.64/20,379.09 = 8,053.28/x
  3. Step 3: Cross multiply
    14,767.64x = 20,379.09 × 8,053.28
  4. Step 4: Simplify right side
    14,767.64x = 164,118,517.92
  5. Step 5: Solve for x
    x = 164,118,517.92/14,767.64
  6. Step 6: Final answer
    x = 11,113.39

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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.