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Finding the Fourth Proportional to 51,497.70, 77,246.55 and 18,255.30

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Solution

The fourth proportional to 51,497.70, 77,246.55 and 18,255.30 is: 27,382.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,497.70 : 77,246.55 = 18,255.30 : x
  2. Step 2: Convert to fraction form
    51,497.70/77,246.55 = 18,255.30/x
  3. Step 3: Cross multiply
    51,497.70x = 77,246.55 × 18,255.30
  4. Step 4: Simplify right side
    51,497.70x = 1,410,158,944.22
  5. Step 5: Solve for x
    x = 1,410,158,944.22/51,497.70
  6. Step 6: Final answer
    x = 27,382.95

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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.