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Finding the Fourth Proportional to 66,073.94, 91,257.71 and 43,513.77

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Solution

The fourth proportional to 66,073.94, 91,257.71 and 43,513.77 is: 60,098.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,073.94 : 91,257.71 = 43,513.77 : x
  2. Step 2: Convert to fraction form
    66,073.94/91,257.71 = 43,513.77/x
  3. Step 3: Cross multiply
    66,073.94x = 91,257.71 × 43,513.77
  4. Step 4: Simplify right side
    66,073.94x = 3,970,967,003.67
  5. Step 5: Solve for x
    x = 3,970,967,003.67/66,073.94
  6. Step 6: Final answer
    x = 60,098.84

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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.