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Finding the Fourth Proportional to 18,798.68, 25,976.40 and 17,887.70

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Solution

The fourth proportional to 18,798.68, 25,976.40 and 17,887.70 is: 24,717.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,798.68 : 25,976.40 = 17,887.70 : x
  2. Step 2: Convert to fraction form
    18,798.68/25,976.40 = 17,887.70/x
  3. Step 3: Cross multiply
    18,798.68x = 25,976.40 × 17,887.70
  4. Step 4: Simplify right side
    18,798.68x = 464,658,048.14
  5. Step 5: Solve for x
    x = 464,658,048.14/18,798.68
  6. Step 6: Final answer
    x = 24,717.59

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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.