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Finding the Fourth Proportional to 107,907.73, 148,932.12 and 67,656.40

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Solution

The fourth proportional to 107,907.73, 148,932.12 and 67,656.40 is: 93,378.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,907.73 : 148,932.12 = 67,656.40 : x
  2. Step 2: Convert to fraction form
    107,907.73/148,932.12 = 67,656.40/x
  3. Step 3: Cross multiply
    107,907.73x = 148,932.12 × 67,656.40
  4. Step 4: Simplify right side
    107,907.73x = 10,076,211,083.57
  5. Step 5: Solve for x
    x = 10,076,211,083.57/107,907.73
  6. Step 6: Final answer
    x = 93,378.03

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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.