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Finding the Fourth Proportional to 18,773.85, 25,918.70 and 14,020.01

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Solution

The fourth proportional to 18,773.85, 25,918.70 and 14,020.01 is: 19,355.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,773.85 : 25,918.70 = 14,020.01 : x
  2. Step 2: Convert to fraction form
    18,773.85/25,918.70 = 14,020.01/x
  3. Step 3: Cross multiply
    18,773.85x = 25,918.70 × 14,020.01
  4. Step 4: Simplify right side
    18,773.85x = 363,380,233.49
  5. Step 5: Solve for x
    x = 363,380,233.49/18,773.85
  6. Step 6: Final answer
    x = 19,355.66

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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.