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Finding the Fourth Proportional to 45,824.80, 68,737.20 and 45,047.20

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Solution

The fourth proportional to 45,824.80, 68,737.20 and 45,047.20 is: 67,570.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,824.80 : 68,737.20 = 45,047.20 : x
  2. Step 2: Convert to fraction form
    45,824.80/68,737.20 = 45,047.20/x
  3. Step 3: Cross multiply
    45,824.80x = 68,737.20 × 45,047.20
  4. Step 4: Simplify right side
    45,824.80x = 3,096,418,395.84
  5. Step 5: Solve for x
    x = 3,096,418,395.84/45,824.80
  6. Step 6: Final answer
    x = 67,570.80

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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.