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Finding the Fourth Proportional to 28,201.93, 42,295.99 and 12,410.94

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Solution

The fourth proportional to 28,201.93, 42,295.99 and 12,410.94 is: 18,613.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,201.93 : 42,295.99 = 12,410.94 : x
  2. Step 2: Convert to fraction form
    28,201.93/42,295.99 = 12,410.94/x
  3. Step 3: Cross multiply
    28,201.93x = 42,295.99 × 12,410.94
  4. Step 4: Simplify right side
    28,201.93x = 524,932,994.13
  5. Step 5: Solve for x
    x = 524,932,994.13/28,201.93
  6. Step 6: Final answer
    x = 18,613.37

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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.