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Finding the Fourth Proportional to 11,346.90, 15,661.29 and 6,633.90

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Solution

The fourth proportional to 11,346.90, 15,661.29 and 6,633.90 is: 9,156.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,346.90 : 15,661.29 = 6,633.90 : x
  2. Step 2: Convert to fraction form
    11,346.90/15,661.29 = 6,633.90/x
  3. Step 3: Cross multiply
    11,346.90x = 15,661.29 × 6,633.90
  4. Step 4: Simplify right side
    11,346.90x = 103,895,431.73
  5. Step 5: Solve for x
    x = 103,895,431.73/11,346.90
  6. Step 6: Final answer
    x = 9,156.28

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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.