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Finding the Fourth Proportional to 77,958.58, 107,599.53 and 49,260.02

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Solution

The fourth proportional to 77,958.58, 107,599.53 and 49,260.02 is: 67,989.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,958.58 : 107,599.53 = 49,260.02 : x
  2. Step 2: Convert to fraction form
    77,958.58/107,599.53 = 49,260.02/x
  3. Step 3: Cross multiply
    77,958.58x = 107,599.53 × 49,260.02
  4. Step 4: Simplify right side
    77,958.58x = 5,300,354,215.49
  5. Step 5: Solve for x
    x = 5,300,354,215.49/77,958.58
  6. Step 6: Final answer
    x = 67,989.37

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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.