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Finding the Fourth Proportional to 682,356.42, 941,347.44 and 395,710.47

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Solution

The fourth proportional to 682,356.42, 941,347.44 and 395,710.47 is: 545,903.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,356.42 : 941,347.44 = 395,710.47 : x
  2. Step 2: Convert to fraction form
    682,356.42/941,347.44 = 395,710.47/x
  3. Step 3: Cross multiply
    682,356.42x = 941,347.44 × 395,710.47
  4. Step 4: Simplify right side
    682,356.42x = 372,501,037,915.70
  5. Step 5: Solve for x
    x = 372,501,037,915.70/682,356.42
  6. Step 6: Final answer
    x = 545,903.91

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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.