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Finding the Fourth Proportional to 66,203.19, 91,362.18 and 35,990.56

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Solution

The fourth proportional to 66,203.19, 91,362.18 and 35,990.56 is: 49,667.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,203.19 : 91,362.18 = 35,990.56 : x
  2. Step 2: Convert to fraction form
    66,203.19/91,362.18 = 35,990.56/x
  3. Step 3: Cross multiply
    66,203.19x = 91,362.18 × 35,990.56
  4. Step 4: Simplify right side
    66,203.19x = 3,288,175,384.26
  5. Step 5: Solve for x
    x = 3,288,175,384.26/66,203.19
  6. Step 6: Final answer
    x = 49,667.93

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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.