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Finding the Fourth Proportional to 374,893.85, 516,984.86 and 343,775.57

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Solution

The fourth proportional to 374,893.85, 516,984.86 and 343,775.57 is: 474,072.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,893.85 : 516,984.86 = 343,775.57 : x
  2. Step 2: Convert to fraction form
    374,893.85/516,984.86 = 343,775.57/x
  3. Step 3: Cross multiply
    374,893.85x = 516,984.86 × 343,775.57
  4. Step 4: Simplify right side
    374,893.85x = 177,726,763,202.39
  5. Step 5: Solve for x
    x = 177,726,763,202.39/374,893.85
  6. Step 6: Final answer
    x = 474,072.23

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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.