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Finding the Fourth Proportional to 66,265.48, 91,448.88 and 37,976.64

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Solution

The fourth proportional to 66,265.48, 91,448.88 and 37,976.64 is: 52,409.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,265.48 : 91,448.88 = 37,976.64 : x
  2. Step 2: Convert to fraction form
    66,265.48/91,448.88 = 37,976.64/x
  3. Step 3: Cross multiply
    66,265.48x = 91,448.88 × 37,976.64
  4. Step 4: Simplify right side
    66,265.48x = 3,472,921,194.16
  5. Step 5: Solve for x
    x = 3,472,921,194.16/66,265.48
  6. Step 6: Final answer
    x = 52,409.21

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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.