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Finding the Fourth Proportional to 107,959.42, 149,053.34 and 67,728.34

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Solution

The fourth proportional to 107,959.42, 149,053.34 and 67,728.34 is: 93,508.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,959.42 : 149,053.34 = 67,728.34 : x
  2. Step 2: Convert to fraction form
    107,959.42/149,053.34 = 67,728.34/x
  3. Step 3: Cross multiply
    107,959.42x = 149,053.34 × 67,728.34
  4. Step 4: Simplify right side
    107,959.42x = 10,095,135,289.66
  5. Step 5: Solve for x
    x = 10,095,135,289.66/107,959.42
  6. Step 6: Final answer
    x = 93,508.61

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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.