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Finding the Fourth Proportional to 190,722.44, 285,992.40 and 70,697

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Solution

The fourth proportional to 190,722.44, 285,992.40 and 70,697 is: 106,011.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,722.44 : 285,992.40 = 70,697 : x
  2. Step 2: Convert to fraction form
    190,722.44/285,992.40 = 70,697/x
  3. Step 3: Cross multiply
    190,722.44x = 285,992.40 × 70,697
  4. Step 4: Simplify right side
    190,722.44x = 20,218,804,702.80
  5. Step 5: Solve for x
    x = 20,218,804,702.80/190,722.44
  6. Step 6: Final answer
    x = 106,011.67

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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.