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Finding the Fourth Proportional to 58,751.28, 81,076.58 and 31,893.60

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Solution

The fourth proportional to 58,751.28, 81,076.58 and 31,893.60 is: 44,013.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,751.28 : 81,076.58 = 31,893.60 : x
  2. Step 2: Convert to fraction form
    58,751.28/81,076.58 = 31,893.60/x
  3. Step 3: Cross multiply
    58,751.28x = 81,076.58 × 31,893.60
  4. Step 4: Simplify right side
    58,751.28x = 2,585,824,011.89
  5. Step 5: Solve for x
    x = 2,585,824,011.89/58,751.28
  6. Step 6: Final answer
    x = 44,013.07

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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.