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Finding the Fourth Proportional to 11,798.52, 17,699.73 and 4,779

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Solution

The fourth proportional to 11,798.52, 17,699.73 and 4,779 is: 7,169.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,798.52 : 17,699.73 = 4,779 : x
  2. Step 2: Convert to fraction form
    11,798.52/17,699.73 = 4,779/x
  3. Step 3: Cross multiply
    11,798.52x = 17,699.73 × 4,779
  4. Step 4: Simplify right side
    11,798.52x = 84,587,009.67
  5. Step 5: Solve for x
    x = 84,587,009.67/11,798.52
  6. Step 6: Final answer
    x = 7,169.29

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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.