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Finding the Fourth Proportional to 9,408.66, 12,985.97 and 5,632.66

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Solution

The fourth proportional to 9,408.66, 12,985.97 and 5,632.66 is: 7,774.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,408.66 : 12,985.97 = 5,632.66 : x
  2. Step 2: Convert to fraction form
    9,408.66/12,985.97 = 5,632.66/x
  3. Step 3: Cross multiply
    9,408.66x = 12,985.97 × 5,632.66
  4. Step 4: Simplify right side
    9,408.66x = 73,145,610.06
  5. Step 5: Solve for x
    x = 73,145,610.06/9,408.66
  6. Step 6: Final answer
    x = 7,774.29

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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.