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Finding the Fourth Proportional to 8,448.86, 11,648.58 and 5,791.64

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Solution

The fourth proportional to 8,448.86, 11,648.58 and 5,791.64 is: 7,985.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,448.86 : 11,648.58 = 5,791.64 : x
  2. Step 2: Convert to fraction form
    8,448.86/11,648.58 = 5,791.64/x
  3. Step 3: Cross multiply
    8,448.86x = 11,648.58 × 5,791.64
  4. Step 4: Simplify right side
    8,448.86x = 67,464,381.87
  5. Step 5: Solve for x
    x = 67,464,381.87/8,448.86
  6. Step 6: Final answer
    x = 7,985.03

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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.