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Finding the Fourth Proportional to 103,596.82, 155,379.85 and 28,709.16

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Solution

The fourth proportional to 103,596.82, 155,379.85 and 28,709.16 is: 43,059.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,596.82 : 155,379.85 = 28,709.16 : x
  2. Step 2: Convert to fraction form
    103,596.82/155,379.85 = 28,709.16/x
  3. Step 3: Cross multiply
    103,596.82x = 155,379.85 × 28,709.16
  4. Step 4: Simplify right side
    103,596.82x = 4,460,824,319.98
  5. Step 5: Solve for x
    x = 4,460,824,319.98/103,596.82
  6. Step 6: Final answer
    x = 43,059.47

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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.