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Finding the Fourth Proportional to 27,282.39, 40,921.74 and 10,639.32

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Solution

The fourth proportional to 27,282.39, 40,921.74 and 10,639.32 is: 15,958.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,282.39 : 40,921.74 = 10,639.32 : x
  2. Step 2: Convert to fraction form
    27,282.39/40,921.74 = 10,639.32/x
  3. Step 3: Cross multiply
    27,282.39x = 40,921.74 × 10,639.32
  4. Step 4: Simplify right side
    27,282.39x = 435,379,486.82
  5. Step 5: Solve for x
    x = 435,379,486.82/27,282.39
  6. Step 6: Final answer
    x = 15,958.26

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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.