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Finding the Fourth Proportional to 64,795.80, 89,415.18 and 43,571.64

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Solution

The fourth proportional to 64,795.80, 89,415.18 and 43,571.64 is: 60,126.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,795.80 : 89,415.18 = 43,571.64 : x
  2. Step 2: Convert to fraction form
    64,795.80/89,415.18 = 43,571.64/x
  3. Step 3: Cross multiply
    64,795.80x = 89,415.18 × 43,571.64
  4. Step 4: Simplify right side
    64,795.80x = 3,895,966,033.50
  5. Step 5: Solve for x
    x = 3,895,966,033.50/64,795.80
  6. Step 6: Final answer
    x = 60,126.83

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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.