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Finding the Fourth Proportional to 1,188,349, 1,639,930.26 and 651,805

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Solution

The fourth proportional to 1,188,349, 1,639,930.26 and 651,805 is: 899,495.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,349 : 1,639,930.26 = 651,805 : x
  2. Step 2: Convert to fraction form
    1,188,349/1,639,930.26 = 651,805/x
  3. Step 3: Cross multiply
    1,188,349x = 1,639,930.26 × 651,805
  4. Step 4: Simplify right side
    1,188,349x = 1,068,914,743,119.30
  5. Step 5: Solve for x
    x = 1,068,914,743,119.30/1,188,349
  6. Step 6: Final answer
    x = 899,495.64

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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.