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Finding the Fourth Proportional to 196,707.84, 271,554.85 and 128,828.83

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Solution

The fourth proportional to 196,707.84, 271,554.85 and 128,828.83 is: 177,847.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,707.84 : 271,554.85 = 128,828.83 : x
  2. Step 2: Convert to fraction form
    196,707.84/271,554.85 = 128,828.83/x
  3. Step 3: Cross multiply
    196,707.84x = 271,554.85 × 128,828.83
  4. Step 4: Simplify right side
    196,707.84x = 34,984,093,959.97
  5. Step 5: Solve for x
    x = 34,984,093,959.97/196,707.84
  6. Step 6: Final answer
    x = 177,847.99

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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.