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Finding the Fourth Proportional to 13,622.99, 18,797.68 and 7,653.52

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Solution

The fourth proportional to 13,622.99, 18,797.68 and 7,653.52 is: 10,560.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,622.99 : 18,797.68 = 7,653.52 : x
  2. Step 2: Convert to fraction form
    13,622.99/18,797.68 = 7,653.52/x
  3. Step 3: Cross multiply
    13,622.99x = 18,797.68 × 7,653.52
  4. Step 4: Simplify right side
    13,622.99x = 143,868,419.83
  5. Step 5: Solve for x
    x = 143,868,419.83/13,622.99
  6. Step 6: Final answer
    x = 10,560.71

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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.