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Finding the Fourth Proportional to 116,969.70, 161,410.67 and 66,665.46

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Solution

The fourth proportional to 116,969.70, 161,410.67 and 66,665.46 is: 91,994.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,969.70 : 161,410.67 = 66,665.46 : x
  2. Step 2: Convert to fraction form
    116,969.70/161,410.67 = 66,665.46/x
  3. Step 3: Cross multiply
    116,969.70x = 161,410.67 × 66,665.46
  4. Step 4: Simplify right side
    116,969.70x = 10,760,517,461.41
  5. Step 5: Solve for x
    x = 10,760,517,461.41/116,969.70
  6. Step 6: Final answer
    x = 91,994.06

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1.5x scale

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.