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Finding the Fourth Proportional to 618,413.05, 927,752.01 and 191,939.95

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Solution

The fourth proportional to 618,413.05, 927,752.01 and 191,939.95 is: 287,951.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,413.05 : 927,752.01 = 191,939.95 : x
  2. Step 2: Convert to fraction form
    618,413.05/927,752.01 = 191,939.95/x
  3. Step 3: Cross multiply
    618,413.05x = 927,752.01 × 191,939.95
  4. Step 4: Simplify right side
    618,413.05x = 178,072,674,411.80
  5. Step 5: Solve for x
    x = 178,072,674,411.80/618,413.05
  6. Step 6: Final answer
    x = 287,951.03

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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.