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Finding the Fourth Proportional to 618,855.36, 928,296 and 198,130.02

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Solution

The fourth proportional to 618,855.36, 928,296 and 198,130.02 is: 297,199.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,855.36 : 928,296 = 198,130.02 : x
  2. Step 2: Convert to fraction form
    618,855.36/928,296 = 198,130.02/x
  3. Step 3: Cross multiply
    618,855.36x = 928,296 × 198,130.02
  4. Step 4: Simplify right side
    618,855.36x = 183,923,305,045.92
  5. Step 5: Solve for x
    x = 183,923,305,045.92/618,855.36
  6. Step 6: Final answer
    x = 297,199.18

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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.