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Finding the Fourth Proportional to 1,986,807, 2,741,798.88 and 1,127,364.96

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Solution

The fourth proportional to 1,986,807, 2,741,798.88 and 1,127,364.96 is: 1,555,766.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,986,807 : 2,741,798.88 = 1,127,364.96 : x
  2. Step 2: Convert to fraction form
    1,986,807/2,741,798.88 = 1,127,364.96/x
  3. Step 3: Cross multiply
    1,986,807x = 2,741,798.88 × 1,127,364.96
  4. Step 4: Simplify right side
    1,986,807x = 3,091,007,984,679.24
  5. Step 5: Solve for x
    x = 3,091,007,984,679.24/1,986,807
  6. Step 6: Final answer
    x = 1,555,766.61

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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.