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Finding the Fourth Proportional to 70,504.97, 105,704.86 and 42,418.44

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Solution

The fourth proportional to 70,504.97, 105,704.86 and 42,418.44 is: 63,596.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,504.97 : 105,704.86 = 42,418.44 : x
  2. Step 2: Convert to fraction form
    70,504.97/105,704.86 = 42,418.44/x
  3. Step 3: Cross multiply
    70,504.97x = 105,704.86 × 42,418.44
  4. Step 4: Simplify right side
    70,504.97x = 4,483,835,551.97
  5. Step 5: Solve for x
    x = 4,483,835,551.97/70,504.97
  6. Step 6: Final answer
    x = 63,596.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.