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Finding the Fourth Proportional to 663,338.94, 995,019.21 and 190,022.46

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Solution

The fourth proportional to 663,338.94, 995,019.21 and 190,022.46 is: 285,036.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,338.94 : 995,019.21 = 190,022.46 : x
  2. Step 2: Convert to fraction form
    663,338.94/995,019.21 = 190,022.46/x
  3. Step 3: Cross multiply
    663,338.94x = 995,019.21 × 190,022.46
  4. Step 4: Simplify right side
    663,338.94x = 189,075,998,031.46
  5. Step 5: Solve for x
    x = 189,075,998,031.46/663,338.94
  6. Step 6: Final answer
    x = 285,036.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.