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Finding the Fourth Proportional to 66,641.03, 91,964.62 and 36,426.47

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Solution

The fourth proportional to 66,641.03, 91,964.62 and 36,426.47 is: 50,268.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,641.03 : 91,964.62 = 36,426.47 : x
  2. Step 2: Convert to fraction form
    66,641.03/91,964.62 = 36,426.47/x
  3. Step 3: Cross multiply
    66,641.03x = 91,964.62 × 36,426.47
  4. Step 4: Simplify right side
    66,641.03x = 3,349,946,613.47
  5. Step 5: Solve for x
    x = 3,349,946,613.47/66,641.03
  6. Step 6: Final answer
    x = 50,268.53

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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.