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Finding the Fourth Proportional to 371,297.70, 512,622.81 and 255,211.02

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Solution

The fourth proportional to 371,297.70, 512,622.81 and 255,211.02 is: 352,350.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,297.70 : 512,622.81 = 255,211.02 : x
  2. Step 2: Convert to fraction form
    371,297.70/512,622.81 = 255,211.02/x
  3. Step 3: Cross multiply
    371,297.70x = 512,622.81 × 255,211.02
  4. Step 4: Simplify right side
    371,297.70x = 130,826,990,215.37
  5. Step 5: Solve for x
    x = 130,826,990,215.37/371,297.70
  6. Step 6: Final answer
    x = 352,350.66

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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.