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Finding the Fourth Proportional to 18,646.76, 27,960.53 and 5,497.43

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Solution

The fourth proportional to 18,646.76, 27,960.53 and 5,497.43 is: 8,243.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,646.76 : 27,960.53 = 5,497.43 : x
  2. Step 2: Convert to fraction form
    18,646.76/27,960.53 = 5,497.43/x
  3. Step 3: Cross multiply
    18,646.76x = 27,960.53 × 5,497.43
  4. Step 4: Simplify right side
    18,646.76x = 153,710,889.15
  5. Step 5: Solve for x
    x = 153,710,889.15/18,646.76
  6. Step 6: Final answer
    x = 8,243.30

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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.