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Finding the Fourth Proportional to 341,485.20, 512,074.20 and 131,053.20

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Solution

The fourth proportional to 341,485.20, 512,074.20 and 131,053.20 is: 196,520.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    341,485.20 : 512,074.20 = 131,053.20 : x
  2. Step 2: Convert to fraction form
    341,485.20/512,074.20 = 131,053.20/x
  3. Step 3: Cross multiply
    341,485.20x = 512,074.20 × 131,053.20
  4. Step 4: Simplify right side
    341,485.20x = 67,108,962,547.44
  5. Step 5: Solve for x
    x = 67,108,962,547.44/341,485.20
  6. Step 6: Final answer
    x = 196,520.85

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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.