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Finding the Fourth Proportional to 45,912.70, 68,856.90 and 14,322.70

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Solution

The fourth proportional to 45,912.70, 68,856.90 and 14,322.70 is: 21,480.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,912.70 : 68,856.90 = 14,322.70 : x
  2. Step 2: Convert to fraction form
    45,912.70/68,856.90 = 14,322.70/x
  3. Step 3: Cross multiply
    45,912.70x = 68,856.90 × 14,322.70
  4. Step 4: Simplify right side
    45,912.70x = 986,216,721.63
  5. Step 5: Solve for x
    x = 986,216,721.63/45,912.70
  6. Step 6: Final answer
    x = 21,480.26

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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.