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Finding the Fourth Proportional to 98,940.33, 136,555.20 and 75,026.70

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Solution

The fourth proportional to 98,940.33, 136,555.20 and 75,026.70 is: 103,550.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,940.33 : 136,555.20 = 75,026.70 : x
  2. Step 2: Convert to fraction form
    98,940.33/136,555.20 = 75,026.70/x
  3. Step 3: Cross multiply
    98,940.33x = 136,555.20 × 75,026.70
  4. Step 4: Simplify right side
    98,940.33x = 10,245,286,023.84
  5. Step 5: Solve for x
    x = 10,245,286,023.84/98,940.33
  6. Step 6: Final answer
    x = 103,550.15

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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.