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Finding the Fourth Proportional to 70,463.28, 105,623.80 and 44,186.46

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Solution

The fourth proportional to 70,463.28, 105,623.80 and 44,186.46 is: 66,235.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,463.28 : 105,623.80 = 44,186.46 : x
  2. Step 2: Convert to fraction form
    70,463.28/105,623.80 = 44,186.46/x
  3. Step 3: Cross multiply
    70,463.28x = 105,623.80 × 44,186.46
  4. Step 4: Simplify right side
    70,463.28x = 4,667,141,813.75
  5. Step 5: Solve for x
    x = 4,667,141,813.75/70,463.28
  6. Step 6: Final answer
    x = 66,235.09

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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.