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Finding the Fourth Proportional to 70,958.88, 97,821.54 and 55,825.31

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Solution

The fourth proportional to 70,958.88, 97,821.54 and 55,825.31 is: 76,958.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,958.88 : 97,821.54 = 55,825.31 : x
  2. Step 2: Convert to fraction form
    70,958.88/97,821.54 = 55,825.31/x
  3. Step 3: Cross multiply
    70,958.88x = 97,821.54 × 55,825.31
  4. Step 4: Simplify right side
    70,958.88x = 5,460,917,306.07
  5. Step 5: Solve for x
    x = 5,460,917,306.07/70,958.88
  6. Step 6: Final answer
    x = 76,958.90

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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.