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Finding the Fourth Proportional to 196,879.68, 271,599.41 and 128,866.68

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Solution

The fourth proportional to 196,879.68, 271,599.41 and 128,866.68 is: 177,774.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,879.68 : 271,599.41 = 128,866.68 : x
  2. Step 2: Convert to fraction form
    196,879.68/271,599.41 = 128,866.68/x
  3. Step 3: Cross multiply
    196,879.68x = 271,599.41 × 128,866.68
  4. Step 4: Simplify right side
    196,879.68x = 35,000,114,578.83
  5. Step 5: Solve for x
    x = 35,000,114,578.83/196,879.68
  6. Step 6: Final answer
    x = 177,774.13

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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.