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Finding the Fourth Proportional to 618,855.86, 928,296.75 and 198,130.52

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Solution

The fourth proportional to 618,855.86, 928,296.75 and 198,130.52 is: 297,199.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,855.86 : 928,296.75 = 198,130.52 : x
  2. Step 2: Convert to fraction form
    618,855.86/928,296.75 = 198,130.52/x
  3. Step 3: Cross multiply
    618,855.86x = 928,296.75 × 198,130.52
  4. Step 4: Simplify right side
    618,855.86x = 183,923,917,791.81
  5. Step 5: Solve for x
    x = 183,923,917,791.81/618,855.86
  6. Step 6: Final answer
    x = 297,199.93

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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.