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Finding the Fourth Proportional to 618,632,832.07, 927,861,879.64 and 198,399,597.32

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Solution

The fourth proportional to 618,632,832.07, 927,861,879.64 and 198,399,597.32 is: 297,571,376.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,632,832.07 : 927,861,879.64 = 198,399,597.32 : x
  2. Step 2: Convert to fraction form
    618,632,832.07/927,861,879.64 = 198,399,597.32/x
  3. Step 3: Cross multiply
    618,632,832.07x = 927,861,879.64 × 198,399,597.32
  4. Step 4: Simplify right side
    618,632,832.07x = 184,087,423,289,154,304
  5. Step 5: Solve for x
    x = 184,087,423,289,154,304/618,632,832.07
  6. Step 6: Final answer
    x = 297,571,376.34

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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.