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Finding the Fourth Proportional to 104,911.91, 157,414.39 and 54,980.15

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Solution

The fourth proportional to 104,911.91, 157,414.39 and 54,980.15 is: 82,494.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,911.91 : 157,414.39 = 54,980.15 : x
  2. Step 2: Convert to fraction form
    104,911.91/157,414.39 = 54,980.15/x
  3. Step 3: Cross multiply
    104,911.91x = 157,414.39 × 54,980.15
  4. Step 4: Simplify right side
    104,911.91x = 8,654,666,774.36
  5. Step 5: Solve for x
    x = 8,654,666,774.36/104,911.91
  6. Step 6: Final answer
    x = 82,494.61

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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.