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Finding the Fourth Proportional to 99,415.73, 137,193.57 and 54,093.62

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Solution

The fourth proportional to 99,415.73, 137,193.57 and 54,093.62 is: 74,649.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,415.73 : 137,193.57 = 54,093.62 : x
  2. Step 2: Convert to fraction form
    99,415.73/137,193.57 = 54,093.62/x
  3. Step 3: Cross multiply
    99,415.73x = 137,193.57 × 54,093.62
  4. Step 4: Simplify right side
    99,415.73x = 7,421,296,156.06
  5. Step 5: Solve for x
    x = 7,421,296,156.06/99,415.73
  6. Step 6: Final answer
    x = 74,649.12

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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.