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Finding the Fourth Proportional to 70,586.06, 105,814.10 and 30,579.90

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Solution

The fourth proportional to 70,586.06, 105,814.10 and 30,579.90 is: 45,841.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,586.06 : 105,814.10 = 30,579.90 : x
  2. Step 2: Convert to fraction form
    70,586.06/105,814.10 = 30,579.90/x
  3. Step 3: Cross multiply
    70,586.06x = 105,814.10 × 30,579.90
  4. Step 4: Simplify right side
    70,586.06x = 3,235,784,596.59
  5. Step 5: Solve for x
    x = 3,235,784,596.59/70,586.06
  6. Step 6: Final answer
    x = 45,841.69

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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.