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Finding the Fourth Proportional to 26,603.99, 39,911.90 and 11,613.50

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Solution

The fourth proportional to 26,603.99, 39,911.90 and 11,613.50 is: 17,422.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,603.99 : 39,911.90 = 11,613.50 : x
  2. Step 2: Convert to fraction form
    26,603.99/39,911.90 = 11,613.50/x
  3. Step 3: Cross multiply
    26,603.99x = 39,911.90 × 11,613.50
  4. Step 4: Simplify right side
    26,603.99x = 463,516,593.02
  5. Step 5: Solve for x
    x = 463,516,593.02/26,603.99
  6. Step 6: Final answer
    x = 17,422.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.