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Finding the Fourth Proportional to 135,907.60, 203,764.20 and 60,966.40

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Solution

The fourth proportional to 135,907.60, 203,764.20 and 60,966.40 is: 91,406.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,907.60 : 203,764.20 = 60,966.40 : x
  2. Step 2: Convert to fraction form
    135,907.60/203,764.20 = 60,966.40/x
  3. Step 3: Cross multiply
    135,907.60x = 203,764.20 × 60,966.40
  4. Step 4: Simplify right side
    135,907.60x = 12,422,769,722.88
  5. Step 5: Solve for x
    x = 12,422,769,722.88/135,907.60
  6. Step 6: Final answer
    x = 91,406.00

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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.