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Finding the Fourth Proportional to 1,678,643, 2,316,530.22 and 914,696.54

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Solution

The fourth proportional to 1,678,643, 2,316,530.22 and 914,696.54 is: 1,262,282.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,678,643 : 2,316,530.22 = 914,696.54 : x
  2. Step 2: Convert to fraction form
    1,678,643/2,316,530.22 = 914,696.54/x
  3. Step 3: Cross multiply
    1,678,643x = 2,316,530.22 × 914,696.54
  4. Step 4: Simplify right side
    1,678,643x = 2,118,922,177,039.44
  5. Step 5: Solve for x
    x = 2,118,922,177,039.44/1,678,643
  6. Step 6: Final answer
    x = 1,262,282.79

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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.