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Finding the Fourth Proportional to 17,653.55, 26,453.79 and 15,986.57

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Solution

The fourth proportional to 17,653.55, 26,453.79 and 15,986.57 is: 23,955.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,653.55 : 26,453.79 = 15,986.57 : x
  2. Step 2: Convert to fraction form
    17,653.55/26,453.79 = 15,986.57/x
  3. Step 3: Cross multiply
    17,653.55x = 26,453.79 × 15,986.57
  4. Step 4: Simplify right side
    17,653.55x = 422,905,233.33
  5. Step 5: Solve for x
    x = 422,905,233.33/17,653.55
  6. Step 6: Final answer
    x = 23,955.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.