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Finding the Fourth Proportional to 66,058.98, 91,237.10 and 43,498.81

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Solution

The fourth proportional to 66,058.98, 91,237.10 and 43,498.81 is: 60,078.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,058.98 : 91,237.10 = 43,498.81 : x
  2. Step 2: Convert to fraction form
    66,058.98/91,237.10 = 43,498.81/x
  3. Step 3: Cross multiply
    66,058.98x = 91,237.10 × 43,498.81
  4. Step 4: Simplify right side
    66,058.98x = 3,968,705,277.85
  5. Step 5: Solve for x
    x = 3,968,705,277.85/66,058.98
  6. Step 6: Final answer
    x = 60,078.21

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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.