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Finding the Fourth Proportional to 615,728.80, 923,679.60 and 194,960.80

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Solution

The fourth proportional to 615,728.80, 923,679.60 and 194,960.80 is: 292,468.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,728.80 : 923,679.60 = 194,960.80 : x
  2. Step 2: Convert to fraction form
    615,728.80/923,679.60 = 194,960.80/x
  3. Step 3: Cross multiply
    615,728.80x = 923,679.60 × 194,960.80
  4. Step 4: Simplify right side
    615,728.80x = 180,081,313,759.68
  5. Step 5: Solve for x
    x = 180,081,313,759.68/615,728.80
  6. Step 6: Final answer
    x = 292,468.56

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1.5x scale

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.