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Finding the Fourth Proportional to 1,336,451.69, 1,842,519.12 and 1,061,721.11

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Solution

The fourth proportional to 1,336,451.69, 1,842,519.12 and 1,061,721.11 is: 1,463,757.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,336,451.69 : 1,842,519.12 = 1,061,721.11 : x
  2. Step 2: Convert to fraction form
    1,336,451.69/1,842,519.12 = 1,061,721.11/x
  3. Step 3: Cross multiply
    1,336,451.69x = 1,842,519.12 × 1,061,721.11
  4. Step 4: Simplify right side
    1,336,451.69x = 1,956,241,449,888.92
  5. Step 5: Solve for x
    x = 1,956,241,449,888.92/1,336,451.69
  6. Step 6: Final answer
    x = 1,463,757.70

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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.