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Finding the Fourth Proportional to 18,773.17, 25,879.37 and 14,289.11

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Solution

The fourth proportional to 18,773.17, 25,879.37 and 14,289.11 is: 19,697.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773.17 : 25,879.37 = 14,289.11 : x
  2. Step 2: Convert to fraction form
    18,773.17/25,879.37 = 14,289.11/x
  3. Step 3: Cross multiply
    18,773.17x = 25,879.37 × 14,289.11
  4. Step 4: Simplify right side
    18,773.17x = 369,793,060.87
  5. Step 5: Solve for x
    x = 369,793,060.87/18,773.17
  6. Step 6: Final answer
    x = 19,697.96

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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.