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Finding the Fourth Proportional to 18,603.79, 25,673.42 and 10,105.99

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Solution

The fourth proportional to 18,603.79, 25,673.42 and 10,105.99 is: 13,946.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.79 : 25,673.42 = 10,105.99 : x
  2. Step 2: Convert to fraction form
    18,603.79/25,673.42 = 10,105.99/x
  3. Step 3: Cross multiply
    18,603.79x = 25,673.42 × 10,105.99
  4. Step 4: Simplify right side
    18,603.79x = 259,455,325.79
  5. Step 5: Solve for x
    x = 259,455,325.79/18,603.79
  6. Step 6: Final answer
    x = 13,946.37

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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.