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Finding the Fourth Proportional to 6,647.76, 9,173.96 and 3,663.70

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Solution

The fourth proportional to 6,647.76, 9,173.96 and 3,663.70 is: 5,055.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,647.76 : 9,173.96 = 3,663.70 : x
  2. Step 2: Convert to fraction form
    6,647.76/9,173.96 = 3,663.70/x
  3. Step 3: Cross multiply
    6,647.76x = 9,173.96 × 3,663.70
  4. Step 4: Simplify right side
    6,647.76x = 33,610,623.48
  5. Step 5: Solve for x
    x = 33,610,623.48/6,647.76
  6. Step 6: Final answer
    x = 5,055.94

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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.