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Finding the Fourth Proportional to 48,578.45, 67,343.98 and 45,917.60

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Solution

The fourth proportional to 48,578.45, 67,343.98 and 45,917.60 is: 63,655.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,578.45 : 67,343.98 = 45,917.60 : x
  2. Step 2: Convert to fraction form
    48,578.45/67,343.98 = 45,917.60/x
  3. Step 3: Cross multiply
    48,578.45x = 67,343.98 × 45,917.60
  4. Step 4: Simplify right side
    48,578.45x = 3,092,273,936.05
  5. Step 5: Solve for x
    x = 3,092,273,936.05/48,578.45
  6. Step 6: Final answer
    x = 63,655.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.