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Finding the Fourth Proportional to 75,305.88, 103,910.55 and 43,468.63

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Solution

The fourth proportional to 75,305.88, 103,910.55 and 43,468.63 is: 59,980.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,305.88 : 103,910.55 = 43,468.63 : x
  2. Step 2: Convert to fraction form
    75,305.88/103,910.55 = 43,468.63/x
  3. Step 3: Cross multiply
    75,305.88x = 103,910.55 × 43,468.63
  4. Step 4: Simplify right side
    75,305.88x = 4,516,849,251.05
  5. Step 5: Solve for x
    x = 4,516,849,251.05/75,305.88
  6. Step 6: Final answer
    x = 59,980.03

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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.