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Finding the Fourth Proportional to 28,762.98, 43,090.98 and 15,626.40

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Solution

The fourth proportional to 28,762.98, 43,090.98 and 15,626.40 is: 23,410.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,762.98 : 43,090.98 = 15,626.40 : x
  2. Step 2: Convert to fraction form
    28,762.98/43,090.98 = 15,626.40/x
  3. Step 3: Cross multiply
    28,762.98x = 43,090.98 × 15,626.40
  4. Step 4: Simplify right side
    28,762.98x = 673,356,889.87
  5. Step 5: Solve for x
    x = 673,356,889.87/28,762.98
  6. Step 6: Final answer
    x = 23,410.54

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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.