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Finding the Fourth Proportional to 65,272.75, 90,076.49 and 36,980.35

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Solution

The fourth proportional to 65,272.75, 90,076.49 and 36,980.35 is: 51,032.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,272.75 : 90,076.49 = 36,980.35 : x
  2. Step 2: Convert to fraction form
    65,272.75/90,076.49 = 36,980.35/x
  3. Step 3: Cross multiply
    65,272.75x = 90,076.49 × 36,980.35
  4. Step 4: Simplify right side
    65,272.75x = 3,331,059,942.07
  5. Step 5: Solve for x
    x = 3,331,059,942.07/65,272.75
  6. Step 6: Final answer
    x = 51,032.93

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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.