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Finding the Fourth Proportional to 26,603.49, 39,911.15 and 11,613

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Solution

The fourth proportional to 26,603.49, 39,911.15 and 11,613 is: 17,422.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,603.49 : 39,911.15 = 11,613 : x
  2. Step 2: Convert to fraction form
    26,603.49/39,911.15 = 11,613/x
  3. Step 3: Cross multiply
    26,603.49x = 39,911.15 × 11,613
  4. Step 4: Simplify right side
    26,603.49x = 463,488,184.95
  5. Step 5: Solve for x
    x = 463,488,184.95/26,603.49
  6. Step 6: Final answer
    x = 17,422.08

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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.