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Finding the Fourth Proportional to 105,605.57, 158,014.64 and 104,424.53

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Solution

The fourth proportional to 105,605.57, 158,014.64 and 104,424.53 is: 156,247.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,605.57 : 158,014.64 = 104,424.53 : x
  2. Step 2: Convert to fraction form
    105,605.57/158,014.64 = 104,424.53/x
  3. Step 3: Cross multiply
    105,605.57x = 158,014.64 × 104,424.53
  4. Step 4: Simplify right side
    105,605.57x = 16,500,603,993.00
  5. Step 5: Solve for x
    x = 16,500,603,993.00/105,605.57
  6. Step 6: Final answer
    x = 156,247.48

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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.