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Finding the Fourth Proportional to 18,326.99, 25,311.97 and 12,348.28

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Solution

The fourth proportional to 18,326.99, 25,311.97 and 12,348.28 is: 17,054.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,326.99 : 25,311.97 = 12,348.28 : x
  2. Step 2: Convert to fraction form
    18,326.99/25,311.97 = 12,348.28/x
  3. Step 3: Cross multiply
    18,326.99x = 25,311.97 × 12,348.28
  4. Step 4: Simplify right side
    18,326.99x = 312,559,305.26
  5. Step 5: Solve for x
    x = 312,559,305.26/18,326.99
  6. Step 6: Final answer
    x = 17,054.59

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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.