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Finding the Fourth Proportional to 66,472.72, 91,732.48 and 36,258.08

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Solution

The fourth proportional to 66,472.72, 91,732.48 and 36,258.08 is: 50,036.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,472.72 : 91,732.48 = 36,258.08 : x
  2. Step 2: Convert to fraction form
    66,472.72/91,732.48 = 36,258.08/x
  3. Step 3: Cross multiply
    66,472.72x = 91,732.48 × 36,258.08
  4. Step 4: Simplify right side
    66,472.72x = 3,326,043,598.44
  5. Step 5: Solve for x
    x = 3,326,043,598.44/66,472.72
  6. Step 6: Final answer
    x = 50,036.22

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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.