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Finding the Fourth Proportional to 6,647.65, 9,173.26 and 3,663.50

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Solution

The fourth proportional to 6,647.65, 9,173.26 and 3,663.50 is: 5,055.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,647.65 : 9,173.26 = 3,663.50 : x
  2. Step 2: Convert to fraction form
    6,647.65/9,173.26 = 3,663.50/x
  3. Step 3: Cross multiply
    6,647.65x = 9,173.26 × 3,663.50
  4. Step 4: Simplify right side
    6,647.65x = 33,606,205.92
  5. Step 5: Solve for x
    x = 33,606,205.92/6,647.65
  6. Step 6: Final answer
    x = 5,055.35

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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.