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Finding the Fourth Proportional to 1,173,326, 1,619,189.88 and 636,782

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Solution

The fourth proportional to 1,173,326, 1,619,189.88 and 636,782 is: 878,759.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173,326 : 1,619,189.88 = 636,782 : x
  2. Step 2: Convert to fraction form
    1,173,326/1,619,189.88 = 636,782/x
  3. Step 3: Cross multiply
    1,173,326x = 1,619,189.88 × 636,782
  4. Step 4: Simplify right side
    1,173,326x = 1,031,070,970,166.16
  5. Step 5: Solve for x
    x = 1,031,070,970,166.16/1,173,326
  6. Step 6: Final answer
    x = 878,759.16

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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.