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Finding the Fourth Proportional to 70,179.93, 105,270.36 and 28,063.56

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Solution

The fourth proportional to 70,179.93, 105,270.36 and 28,063.56 is: 42,095.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,179.93 : 105,270.36 = 28,063.56 : x
  2. Step 2: Convert to fraction form
    70,179.93/105,270.36 = 28,063.56/x
  3. Step 3: Cross multiply
    70,179.93x = 105,270.36 × 28,063.56
  4. Step 4: Simplify right side
    70,179.93x = 2,954,261,353.61
  5. Step 5: Solve for x
    x = 2,954,261,353.61/70,179.93
  6. Step 6: Final answer
    x = 42,095.53

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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.