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Finding the Fourth Proportional to 107,364.80, 161,047.20 and 67,966.40

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Solution

The fourth proportional to 107,364.80, 161,047.20 and 67,966.40 is: 101,949.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,364.80 : 161,047.20 = 67,966.40 : x
  2. Step 2: Convert to fraction form
    107,364.80/161,047.20 = 67,966.40/x
  3. Step 3: Cross multiply
    107,364.80x = 161,047.20 × 67,966.40
  4. Step 4: Simplify right side
    107,364.80x = 10,945,798,414.08
  5. Step 5: Solve for x
    x = 10,945,798,414.08/107,364.80
  6. Step 6: Final answer
    x = 101,949.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.