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Finding the Fourth Proportional to 6,627.39, 9,145.88 and 3,643.23

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Solution

The fourth proportional to 6,627.39, 9,145.88 and 3,643.23 is: 5,027.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,627.39 : 9,145.88 = 3,643.23 : x
  2. Step 2: Convert to fraction form
    6,627.39/9,145.88 = 3,643.23/x
  3. Step 3: Cross multiply
    6,627.39x = 9,145.88 × 3,643.23
  4. Step 4: Simplify right side
    6,627.39x = 33,320,526.18
  5. Step 5: Solve for x
    x = 33,320,526.18/6,627.39
  6. Step 6: Final answer
    x = 5,027.70

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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.