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Finding the Fourth Proportional to 66,473.19, 91,731.33 and 36,259.20

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Solution

The fourth proportional to 66,473.19, 91,731.33 and 36,259.20 is: 50,036.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,473.19 : 91,731.33 = 36,259.20 : x
  2. Step 2: Convert to fraction form
    66,473.19/91,731.33 = 36,259.20/x
  3. Step 3: Cross multiply
    66,473.19x = 91,731.33 × 36,259.20
  4. Step 4: Simplify right side
    66,473.19x = 3,326,104,640.74
  5. Step 5: Solve for x
    x = 3,326,104,640.74/66,473.19
  6. Step 6: Final answer
    x = 50,036.78

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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.