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Finding the Fourth Proportional to 66,628.79, 91,945.01 and 36,415.11

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Solution

The fourth proportional to 66,628.79, 91,945.01 and 36,415.11 is: 50,251.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,628.79 : 91,945.01 = 36,415.11 : x
  2. Step 2: Convert to fraction form
    66,628.79/91,945.01 = 36,415.11/x
  3. Step 3: Cross multiply
    66,628.79x = 91,945.01 × 36,415.11
  4. Step 4: Simplify right side
    66,628.79x = 3,348,187,744.14
  5. Step 5: Solve for x
    x = 3,348,187,744.14/66,628.79
  6. Step 6: Final answer
    x = 50,251.37

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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.