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Finding the Fourth Proportional to 1,807,699.96, 2,494,624.98 and 991,909

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Solution

The fourth proportional to 1,807,699.96, 2,494,624.98 and 991,909 is: 1,368,833.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,807,699.96 : 2,494,624.98 = 991,909 : x
  2. Step 2: Convert to fraction form
    1,807,699.96/2,494,624.98 = 991,909/x
  3. Step 3: Cross multiply
    1,807,699.96x = 2,494,624.98 × 991,909
  4. Step 4: Simplify right side
    1,807,699.96x = 2,474,440,969,286.82
  5. Step 5: Solve for x
    x = 2,474,440,969,286.82/1,807,699.96
  6. Step 6: Final answer
    x = 1,368,833.89

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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.