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Finding the Fourth Proportional to 395,358.06, 545,186.32 and 338,186.64

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Solution

The fourth proportional to 395,358.06, 545,186.32 and 338,186.64 is: 466,348.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,358.06 : 545,186.32 = 338,186.64 : x
  2. Step 2: Convert to fraction form
    395,358.06/545,186.32 = 338,186.64/x
  3. Step 3: Cross multiply
    395,358.06x = 545,186.32 × 338,186.64
  4. Step 4: Simplify right side
    395,358.06x = 184,374,728,889.30
  5. Step 5: Solve for x
    x = 184,374,728,889.30/395,358.06
  6. Step 6: Final answer
    x = 466,348.73

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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.