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Finding the Fourth Proportional to 66,057.47, 91,235.02 and 43,497.31

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Solution

The fourth proportional to 66,057.47, 91,235.02 and 43,497.31 is: 60,076.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,057.47 : 91,235.02 = 43,497.31 : x
  2. Step 2: Convert to fraction form
    66,057.47/91,235.02 = 43,497.31/x
  3. Step 3: Cross multiply
    66,057.47x = 91,235.02 × 43,497.31
  4. Step 4: Simplify right side
    66,057.47x = 3,968,477,947.80
  5. Step 5: Solve for x
    x = 3,968,477,947.80/66,057.47
  6. Step 6: Final answer
    x = 60,076.14

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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.