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Finding the Fourth Proportional to 66,086.31, 91,203.62 and 37,406.01

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Solution

The fourth proportional to 66,086.31, 91,203.62 and 37,406.01 is: 51,622.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,086.31 : 91,203.62 = 37,406.01 : x
  2. Step 2: Convert to fraction form
    66,086.31/91,203.62 = 37,406.01/x
  3. Step 3: Cross multiply
    66,086.31x = 91,203.62 × 37,406.01
  4. Step 4: Simplify right side
    66,086.31x = 3,411,563,334.73
  5. Step 5: Solve for x
    x = 3,411,563,334.73/66,086.31
  6. Step 6: Final answer
    x = 51,622.84

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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.