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Finding the Fourth Proportional to 66,053.45, 90,593.29 and 63,340.86

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Solution

The fourth proportional to 66,053.45, 90,593.29 and 63,340.86 is: 86,872.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,053.45 : 90,593.29 = 63,340.86 : x
  2. Step 2: Convert to fraction form
    66,053.45/90,593.29 = 63,340.86/x
  3. Step 3: Cross multiply
    66,053.45x = 90,593.29 × 63,340.86
  4. Step 4: Simplify right side
    66,053.45x = 5,738,257,057.18
  5. Step 5: Solve for x
    x = 5,738,257,057.18/66,053.45
  6. Step 6: Final answer
    x = 86,872.94

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.