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Finding the Fourth Proportional to 680,777.54, 939,598.98 and 394,297.54

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Solution

The fourth proportional to 680,777.54, 939,598.98 and 394,297.54 is: 544,203.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,777.54 : 939,598.98 = 394,297.54 : x
  2. Step 2: Convert to fraction form
    680,777.54/939,598.98 = 394,297.54/x
  3. Step 3: Cross multiply
    680,777.54x = 939,598.98 × 394,297.54
  4. Step 4: Simplify right side
    680,777.54x = 370,481,566,400.51
  5. Step 5: Solve for x
    x = 370,481,566,400.51/680,777.54
  6. Step 6: Final answer
    x = 544,203.57

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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.