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Finding the Fourth Proportional to 265,622.20, 398,433.30 and 194,763.40

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Solution

The fourth proportional to 265,622.20, 398,433.30 and 194,763.40 is: 292,145.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    265,622.20 : 398,433.30 = 194,763.40 : x
  2. Step 2: Convert to fraction form
    265,622.20/398,433.30 = 194,763.40/x
  3. Step 3: Cross multiply
    265,622.20x = 398,433.30 × 194,763.40
  4. Step 4: Simplify right side
    265,622.20x = 77,600,224,181.22
  5. Step 5: Solve for x
    x = 77,600,224,181.22/265,622.20
  6. Step 6: Final answer
    x = 292,145.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.