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Finding the Fourth Proportional to 618,061.20, 927,005.40 and 197,379.60

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Solution

The fourth proportional to 618,061.20, 927,005.40 and 197,379.60 is: 296,041.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,061.20 : 927,005.40 = 197,379.60 : x
  2. Step 2: Convert to fraction form
    618,061.20/927,005.40 = 197,379.60/x
  3. Step 3: Cross multiply
    618,061.20x = 927,005.40 × 197,379.60
  4. Step 4: Simplify right side
    618,061.20x = 182,971,955,049.84
  5. Step 5: Solve for x
    x = 182,971,955,049.84/618,061.20
  6. Step 6: Final answer
    x = 296,041.81

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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.