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Finding the Fourth Proportional to 18,386.80, 27,583.22 and 7,293.54

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Solution

The fourth proportional to 18,386.80, 27,583.22 and 7,293.54 is: 10,941.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,386.80 : 27,583.22 = 7,293.54 : x
  2. Step 2: Convert to fraction form
    18,386.80/27,583.22 = 7,293.54/x
  3. Step 3: Cross multiply
    18,386.80x = 27,583.22 × 7,293.54
  4. Step 4: Simplify right side
    18,386.80x = 201,179,318.40
  5. Step 5: Solve for x
    x = 201,179,318.40/18,386.80
  6. Step 6: Final answer
    x = 10,941.51

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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.