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Finding the Fourth Proportional to 18,456.64, 27,671.53 and 7,360

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Solution

The fourth proportional to 18,456.64, 27,671.53 and 7,360 is: 11,034.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,456.64 : 27,671.53 = 7,360 : x
  2. Step 2: Convert to fraction form
    18,456.64/27,671.53 = 7,360/x
  3. Step 3: Cross multiply
    18,456.64x = 27,671.53 × 7,360
  4. Step 4: Simplify right side
    18,456.64x = 203,662,460.80
  5. Step 5: Solve for x
    x = 203,662,460.80/18,456.64
  6. Step 6: Final answer
    x = 11,034.64

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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.