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Finding the Fourth Proportional to 236,078.20, 331,442.60 and 236,078.20

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Solution

The fourth proportional to 236,078.20, 331,442.60 and 236,078.20 is: 331,442.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,078.20 : 331,442.60 = 236,078.20 : x
  2. Step 2: Convert to fraction form
    236,078.20/331,442.60 = 236,078.20/x
  3. Step 3: Cross multiply
    236,078.20x = 331,442.60 × 236,078.20
  4. Step 4: Simplify right side
    236,078.20x = 78,246,372,411.32
  5. Step 5: Solve for x
    x = 78,246,372,411.32/236,078.20
  6. Step 6: Final answer
    x = 331,442.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.