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Finding the Fourth Proportional to 70,048.41, 105,072.35 and 41,976.92

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Solution

The fourth proportional to 70,048.41, 105,072.35 and 41,976.92 is: 62,965.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,048.41 : 105,072.35 = 41,976.92 : x
  2. Step 2: Convert to fraction form
    70,048.41/105,072.35 = 41,976.92/x
  3. Step 3: Cross multiply
    70,048.41x = 105,072.35 × 41,976.92
  4. Step 4: Simplify right side
    70,048.41x = 4,410,612,894.92
  5. Step 5: Solve for x
    x = 4,410,612,894.92/70,048.41
  6. Step 6: Final answer
    x = 62,965.21

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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.