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Finding the Fourth Proportional to 8,610.32, 11,887.08 and 8,083.28

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Solution

The fourth proportional to 8,610.32, 11,887.08 and 8,083.28 is: 11,159.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,610.32 : 11,887.08 = 8,083.28 : x
  2. Step 2: Convert to fraction form
    8,610.32/11,887.08 = 8,083.28/x
  3. Step 3: Cross multiply
    8,610.32x = 11,887.08 × 8,083.28
  4. Step 4: Simplify right side
    8,610.32x = 96,086,596.02
  5. Step 5: Solve for x
    x = 96,086,596.02/8,610.32
  6. Step 6: Final answer
    x = 11,159.47

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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.