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Finding the Fourth Proportional to 107,900.82, 148,911.21 and 62,578.44

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Solution

The fourth proportional to 107,900.82, 148,911.21 and 62,578.44 is: 86,362.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,900.82 : 148,911.21 = 62,578.44 : x
  2. Step 2: Convert to fraction form
    107,900.82/148,911.21 = 62,578.44/x
  3. Step 3: Cross multiply
    107,900.82x = 148,911.21 × 62,578.44
  4. Step 4: Simplify right side
    107,900.82x = 9,318,631,220.31
  5. Step 5: Solve for x
    x = 9,318,631,220.31/107,900.82
  6. Step 6: Final answer
    x = 86,362.93

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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.