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Finding the Fourth Proportional to 75,709.40, 104,481.35 and 43,449.92

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Solution

The fourth proportional to 75,709.40, 104,481.35 and 43,449.92 is: 59,962.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,709.40 : 104,481.35 = 43,449.92 : x
  2. Step 2: Convert to fraction form
    75,709.40/104,481.35 = 43,449.92/x
  3. Step 3: Cross multiply
    75,709.40x = 104,481.35 × 43,449.92
  4. Step 4: Simplify right side
    75,709.40x = 4,539,706,298.99
  5. Step 5: Solve for x
    x = 4,539,706,298.99/75,709.40
  6. Step 6: Final answer
    x = 59,962.25

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.