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Finding the Fourth Proportional to 43,992.98, 65,993.36 and 12,403.32

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Solution

The fourth proportional to 43,992.98, 65,993.36 and 12,403.32 is: 18,606.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,992.98 : 65,993.36 = 12,403.32 : x
  2. Step 2: Convert to fraction form
    43,992.98/65,993.36 = 12,403.32/x
  3. Step 3: Cross multiply
    43,992.98x = 65,993.36 × 12,403.32
  4. Step 4: Simplify right side
    43,992.98x = 818,536,699.94
  5. Step 5: Solve for x
    x = 818,536,699.94/43,992.98
  6. Step 6: Final answer
    x = 18,606.08

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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.