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Finding the Fourth Proportional to 19,603.27, 29,404.91 and 7,916.59

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Solution

The fourth proportional to 19,603.27, 29,404.91 and 7,916.59 is: 11,874.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,603.27 : 29,404.91 = 7,916.59 : x
  2. Step 2: Convert to fraction form
    19,603.27/29,404.91 = 7,916.59/x
  3. Step 3: Cross multiply
    19,603.27x = 29,404.91 × 7,916.59
  4. Step 4: Simplify right side
    19,603.27x = 232,786,616.46
  5. Step 5: Solve for x
    x = 232,786,616.46/19,603.27
  6. Step 6: Final answer
    x = 11,874.89

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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.