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Finding the Fourth Proportional to 768,517.01, 1,060,643.42 and 639,227.37

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Solution

The fourth proportional to 768,517.01, 1,060,643.42 and 639,227.37 is: 882,208.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,517.01 : 1,060,643.42 = 639,227.37 : x
  2. Step 2: Convert to fraction form
    768,517.01/1,060,643.42 = 639,227.37/x
  3. Step 3: Cross multiply
    768,517.01x = 1,060,643.42 × 639,227.37
  4. Step 4: Simplify right side
    768,517.01x = 677,992,303,874.41
  5. Step 5: Solve for x
    x = 677,992,303,874.41/768,517.01
  6. Step 6: Final answer
    x = 882,208.58

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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.