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Finding the Fourth Proportional to 272,778.69, 409,168.07 and 83,240.06

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Solution

The fourth proportional to 272,778.69, 409,168.07 and 83,240.06 is: 124,860.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,778.69 : 409,168.07 = 83,240.06 : x
  2. Step 2: Convert to fraction form
    272,778.69/409,168.07 = 83,240.06/x
  3. Step 3: Cross multiply
    272,778.69x = 409,168.07 × 83,240.06
  4. Step 4: Simplify right side
    272,778.69x = 34,059,172,234.84
  5. Step 5: Solve for x
    x = 34,059,172,234.84/272,778.69
  6. Step 6: Final answer
    x = 124,860.09

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1.5x scale

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.