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Finding the Fourth Proportional to 31,391,187.40, 43,846,885.40 and 31,391,187.40

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Solution

The fourth proportional to 31,391,187.40, 43,846,885.40 and 31,391,187.40 is: 43,846,885.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,391,187.40 : 43,846,885.40 = 31,391,187.40 : x
  2. Step 2: Convert to fraction form
    31,391,187.40/43,846,885.40 = 31,391,187.40/x
  3. Step 3: Cross multiply
    31,391,187.40x = 43,846,885.40 × 31,391,187.40
  4. Step 4: Simplify right side
    31,391,187.40x = 1,376,405,796,497,723.75
  5. Step 5: Solve for x
    x = 1,376,405,796,497,723.75/31,391,187.40
  6. Step 6: Final answer
    x = 43,846,885.40

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.