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Finding the Fourth Proportional to 615,439.30, 923,066.60 and 194,660.50

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Solution

The fourth proportional to 615,439.30, 923,066.60 and 194,660.50 is: 291,961.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,439.30 : 923,066.60 = 194,660.50 : x
  2. Step 2: Convert to fraction form
    615,439.30/923,066.60 = 194,660.50/x
  3. Step 3: Cross multiply
    615,439.30x = 923,066.60 × 194,660.50
  4. Step 4: Simplify right side
    615,439.30x = 179,684,605,889.30
  5. Step 5: Solve for x
    x = 179,684,605,889.30/615,439.30
  6. Step 6: Final answer
    x = 291,961.54

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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.