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Finding the Fourth Proportional to 686,040.02, 946,805.32 and 395,662.92

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Solution

The fourth proportional to 686,040.02, 946,805.32 and 395,662.92 is: 546,055.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,040.02 : 946,805.32 = 395,662.92 : x
  2. Step 2: Convert to fraction form
    686,040.02/946,805.32 = 395,662.92/x
  3. Step 3: Cross multiply
    686,040.02x = 946,805.32 × 395,662.92
  4. Step 4: Simplify right side
    686,040.02x = 374,615,757,582.73
  5. Step 5: Solve for x
    x = 374,615,757,582.73/686,040.02
  6. Step 6: Final answer
    x = 546,055.25

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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.