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Finding the Fourth Proportional to 6,645.42, 9,972.45 and 3,362.22

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Solution

The fourth proportional to 6,645.42, 9,972.45 and 3,362.22 is: 5,045.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,645.42 : 9,972.45 = 3,362.22 : x
  2. Step 2: Convert to fraction form
    6,645.42/9,972.45 = 3,362.22/x
  3. Step 3: Cross multiply
    6,645.42x = 9,972.45 × 3,362.22
  4. Step 4: Simplify right side
    6,645.42x = 33,529,570.84
  5. Step 5: Solve for x
    x = 33,529,570.84/6,645.42
  6. Step 6: Final answer
    x = 5,045.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.