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Finding the Fourth Proportional to 245,056.60, 367,584.90 and 120,640.60

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Solution

The fourth proportional to 245,056.60, 367,584.90 and 120,640.60 is: 180,960.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,056.60 : 367,584.90 = 120,640.60 : x
  2. Step 2: Convert to fraction form
    245,056.60/367,584.90 = 120,640.60/x
  3. Step 3: Cross multiply
    245,056.60x = 367,584.90 × 120,640.60
  4. Step 4: Simplify right side
    245,056.60x = 44,345,662,886.94
  5. Step 5: Solve for x
    x = 44,345,662,886.94/245,056.60
  6. Step 6: Final answer
    x = 180,960.90

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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.