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Finding the Fourth Proportional to 346,906.80, 478,722.15 and 196,003.80

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Solution

The fourth proportional to 346,906.80, 478,722.15 and 196,003.80 is: 270,480.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,906.80 : 478,722.15 = 196,003.80 : x
  2. Step 2: Convert to fraction form
    346,906.80/478,722.15 = 196,003.80/x
  3. Step 3: Cross multiply
    346,906.80x = 478,722.15 × 196,003.80
  4. Step 4: Simplify right side
    346,906.80x = 93,831,360,544.17
  5. Step 5: Solve for x
    x = 93,831,360,544.17/346,906.80
  6. Step 6: Final answer
    x = 270,480.03

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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.