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Finding the Fourth Proportional to 43,788.45, 65,691.92 and 14,203.99

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Solution

The fourth proportional to 43,788.45, 65,691.92 and 14,203.99 is: 21,308.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,788.45 : 65,691.92 = 14,203.99 : x
  2. Step 2: Convert to fraction form
    43,788.45/65,691.92 = 14,203.99/x
  3. Step 3: Cross multiply
    43,788.45x = 65,691.92 × 14,203.99
  4. Step 4: Simplify right side
    43,788.45x = 933,087,374.76
  5. Step 5: Solve for x
    x = 933,087,374.76/43,788.45
  6. Step 6: Final answer
    x = 21,308.98

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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.