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Finding the Fourth Proportional to 14,709.88, 20,299.85 and 7,995.51

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Solution

The fourth proportional to 14,709.88, 20,299.85 and 7,995.51 is: 11,033.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,709.88 : 20,299.85 = 7,995.51 : x
  2. Step 2: Convert to fraction form
    14,709.88/20,299.85 = 7,995.51/x
  3. Step 3: Cross multiply
    14,709.88x = 20,299.85 × 7,995.51
  4. Step 4: Simplify right side
    14,709.88x = 162,307,653.67
  5. Step 5: Solve for x
    x = 162,307,653.67/14,709.88
  6. Step 6: Final answer
    x = 11,033.92

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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.