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Finding the Fourth Proportional to 49,311.70, 73,969.95 and 13,772.98

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Solution

The fourth proportional to 49,311.70, 73,969.95 and 13,772.98 is: 20,660.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,311.70 : 73,969.95 = 13,772.98 : x
  2. Step 2: Convert to fraction form
    49,311.70/73,969.95 = 13,772.98/x
  3. Step 3: Cross multiply
    49,311.70x = 73,969.95 × 13,772.98
  4. Step 4: Simplify right side
    49,311.70x = 1,018,786,641.95
  5. Step 5: Solve for x
    x = 1,018,786,641.95/49,311.70
  6. Step 6: Final answer
    x = 20,660.14

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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.