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Finding the Fourth Proportional to 107,906.73, 148,930.74 and 67,655.40

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Solution

The fourth proportional to 107,906.73, 148,930.74 and 67,655.40 is: 93,376.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,906.73 : 148,930.74 = 67,655.40 : x
  2. Step 2: Convert to fraction form
    107,906.73/148,930.74 = 67,655.40/x
  3. Step 3: Cross multiply
    107,906.73x = 148,930.74 × 67,655.40
  4. Step 4: Simplify right side
    107,906.73x = 10,075,968,787.00
  5. Step 5: Solve for x
    x = 10,075,968,787.00/107,906.73
  6. Step 6: Final answer
    x = 93,376.65

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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.