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Finding the Fourth Proportional to 1,321,569.75, 1,823,767.88 and 717,957.75

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Solution

The fourth proportional to 1,321,569.75, 1,823,767.88 and 717,957.75 is: 990,782.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,569.75 : 1,823,767.88 = 717,957.75 : x
  2. Step 2: Convert to fraction form
    1,321,569.75/1,823,767.88 = 717,957.75/x
  3. Step 3: Cross multiply
    1,321,569.75x = 1,823,767.88 × 717,957.75
  4. Step 4: Simplify right side
    1,321,569.75x = 1,309,388,280,057.28
  5. Step 5: Solve for x
    x = 1,309,388,280,057.28/1,321,569.75
  6. Step 6: Final answer
    x = 990,782.58

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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.