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Finding the Fourth Proportional to 18,537.92, 27,817.76 and 6,859.28

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Solution

The fourth proportional to 18,537.92, 27,817.76 and 6,859.28 is: 10,292.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,537.92 : 27,817.76 = 6,859.28 : x
  2. Step 2: Convert to fraction form
    18,537.92/27,817.76 = 6,859.28/x
  3. Step 3: Cross multiply
    18,537.92x = 27,817.76 × 6,859.28
  4. Step 4: Simplify right side
    18,537.92x = 190,809,804.81
  5. Step 5: Solve for x
    x = 190,809,804.81/18,537.92
  6. Step 6: Final answer
    x = 10,292.95

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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.