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Finding the Fourth Proportional to 45,348.78, 62,611.84 and 40,553.84

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Solution

The fourth proportional to 45,348.78, 62,611.84 and 40,553.84 is: 55,991.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,348.78 : 62,611.84 = 40,553.84 : x
  2. Step 2: Convert to fraction form
    45,348.78/62,611.84 = 40,553.84/x
  3. Step 3: Cross multiply
    45,348.78x = 62,611.84 × 40,553.84
  4. Step 4: Simplify right side
    45,348.78x = 2,539,150,541.47
  5. Step 5: Solve for x
    x = 2,539,150,541.47/45,348.78
  6. Step 6: Final answer
    x = 55,991.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.