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Finding the Fourth Proportional to 54,969,728.86, 75,864,955.86 and 31,764,855.82

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Solution

The fourth proportional to 54,969,728.86, 75,864,955.86 and 31,764,855.82 is: 43,839,390.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,969,728.86 : 75,864,955.86 = 31,764,855.82 : x
  2. Step 2: Convert to fraction form
    54,969,728.86/75,864,955.86 = 31,764,855.82/x
  3. Step 3: Cross multiply
    54,969,728.86x = 75,864,955.86 × 31,764,855.82
  4. Step 4: Simplify right side
    54,969,728.86x = 2,409,839,384,683,564
  5. Step 5: Solve for x
    x = 2,409,839,384,683,564/54,969,728.86
  6. Step 6: Final answer
    x = 43,839,390.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.