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Finding the Fourth Proportional to 75,216.93, 103,799.64 and 43,385.95

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Solution

The fourth proportional to 75,216.93, 103,799.64 and 43,385.95 is: 59,872.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,216.93 : 103,799.64 = 43,385.95 : x
  2. Step 2: Convert to fraction form
    75,216.93/103,799.64 = 43,385.95/x
  3. Step 3: Cross multiply
    75,216.93x = 103,799.64 × 43,385.95
  4. Step 4: Simplify right side
    75,216.93x = 4,503,445,991.06
  5. Step 5: Solve for x
    x = 4,503,445,991.06/75,216.93
  6. Step 6: Final answer
    x = 59,872.77

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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.