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Finding the Fourth Proportional to 626,805.36, 864,992.52 and 340,324.56

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Solution

The fourth proportional to 626,805.36, 864,992.52 and 340,324.56 is: 469,648.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,805.36 : 864,992.52 = 340,324.56 : x
  2. Step 2: Convert to fraction form
    626,805.36/864,992.52 = 340,324.56/x
  3. Step 3: Cross multiply
    626,805.36x = 864,992.52 × 340,324.56
  4. Step 4: Simplify right side
    626,805.36x = 294,378,198,772.29
  5. Step 5: Solve for x
    x = 294,378,198,772.29/626,805.36
  6. Step 6: Final answer
    x = 469,648.50

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1.5x scale

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.