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Finding the Fourth Proportional to 8,992.04, 12,408.74 and 5,636.66

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Solution

The fourth proportional to 8,992.04, 12,408.74 and 5,636.66 is: 7,778.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,992.04 : 12,408.74 = 5,636.66 : x
  2. Step 2: Convert to fraction form
    8,992.04/12,408.74 = 5,636.66/x
  3. Step 3: Cross multiply
    8,992.04x = 12,408.74 × 5,636.66
  4. Step 4: Simplify right side
    8,992.04x = 69,943,848.41
  5. Step 5: Solve for x
    x = 69,943,848.41/8,992.04
  6. Step 6: Final answer
    x = 7,778.42

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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.