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Finding the Fourth Proportional to 618,000.30, 927,000.45 and 197,318.70

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Solution

The fourth proportional to 618,000.30, 927,000.45 and 197,318.70 is: 295,978.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,000.30 : 927,000.45 = 197,318.70 : x
  2. Step 2: Convert to fraction form
    618,000.30/927,000.45 = 197,318.70/x
  3. Step 3: Cross multiply
    618,000.30x = 927,000.45 × 197,318.70
  4. Step 4: Simplify right side
    618,000.30x = 182,914,523,693.42
  5. Step 5: Solve for x
    x = 182,914,523,693.42/618,000.30
  6. Step 6: Final answer
    x = 295,978.05

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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.