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Finding the Fourth Proportional to 18,798.40, 25,914.04 and 14,811.56

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Solution

The fourth proportional to 18,798.40, 25,914.04 and 14,811.56 is: 20,418.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,798.40 : 25,914.04 = 14,811.56 : x
  2. Step 2: Convert to fraction form
    18,798.40/25,914.04 = 14,811.56/x
  3. Step 3: Cross multiply
    18,798.40x = 25,914.04 × 14,811.56
  4. Step 4: Simplify right side
    18,798.40x = 383,827,358.30
  5. Step 5: Solve for x
    x = 383,827,358.30/18,798.40
  6. Step 6: Final answer
    x = 20,418.09

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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.