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Finding the Fourth Proportional to 66,549.64, 91,837.16 and 36,335.21

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Solution

The fourth proportional to 66,549.64, 91,837.16 and 36,335.21 is: 50,141.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,549.64 : 91,837.16 = 36,335.21 : x
  2. Step 2: Convert to fraction form
    66,549.64/91,837.16 = 36,335.21/x
  3. Step 3: Cross multiply
    66,549.64x = 91,837.16 × 36,335.21
  4. Step 4: Simplify right side
    66,549.64x = 3,336,921,853.54
  5. Step 5: Solve for x
    x = 3,336,921,853.54/66,549.64
  6. Step 6: Final answer
    x = 50,141.85

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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.