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Finding the Fourth Proportional to 1,270,647, 1,753,886.52 and 817,938

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Solution

The fourth proportional to 1,270,647, 1,753,886.52 and 817,938 is: 1,129,007.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,270,647 : 1,753,886.52 = 817,938 : x
  2. Step 2: Convert to fraction form
    1,270,647/1,753,886.52 = 817,938/x
  3. Step 3: Cross multiply
    1,270,647x = 1,753,886.52 × 817,938
  4. Step 4: Simplify right side
    1,270,647x = 1,434,570,432,395.76
  5. Step 5: Solve for x
    x = 1,434,570,432,395.76/1,270,647
  6. Step 6: Final answer
    x = 1,129,007.85

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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.