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Finding the Fourth Proportional to 66,503.70, 91,772.58 and 37,824.48

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Solution

The fourth proportional to 66,503.70, 91,772.58 and 37,824.48 is: 52,196.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,503.70 : 91,772.58 = 37,824.48 : x
  2. Step 2: Convert to fraction form
    66,503.70/91,772.58 = 37,824.48/x
  3. Step 3: Cross multiply
    66,503.70x = 91,772.58 × 37,824.48
  4. Step 4: Simplify right side
    66,503.70x = 3,471,250,116.76
  5. Step 5: Solve for x
    x = 3,471,250,116.76/66,503.70
  6. Step 6: Final answer
    x = 52,196.35

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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.