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Finding the Fourth Proportional to 625,775.28, 863,252 and 395,945.28

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Solution

The fourth proportional to 625,775.28, 863,252 and 395,945.28 is: 546,203.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,775.28 : 863,252 = 395,945.28 : x
  2. Step 2: Convert to fraction form
    625,775.28/863,252 = 395,945.28/x
  3. Step 3: Cross multiply
    625,775.28x = 863,252 × 395,945.28
  4. Step 4: Simplify right side
    625,775.28x = 341,800,554,850.56
  5. Step 5: Solve for x
    x = 341,800,554,850.56/625,775.28
  6. Step 6: Final answer
    x = 546,203.35

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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.