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Finding the Fourth Proportional to 346,798.80, 520,198.20 and 330,469.20

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Solution

The fourth proportional to 346,798.80, 520,198.20 and 330,469.20 is: 495,703.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,798.80 : 520,198.20 = 330,469.20 : x
  2. Step 2: Convert to fraction form
    346,798.80/520,198.20 = 330,469.20/x
  3. Step 3: Cross multiply
    346,798.80x = 520,198.20 × 330,469.20
  4. Step 4: Simplify right side
    346,798.80x = 171,909,482,995.44
  5. Step 5: Solve for x
    x = 171,909,482,995.44/346,798.80
  6. Step 6: Final answer
    x = 495,703.80

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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.