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Finding the Fourth Proportional to 75,645.70, 104,390.16 and 41,653.45

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Solution

The fourth proportional to 75,645.70, 104,390.16 and 41,653.45 is: 57,481.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,645.70 : 104,390.16 = 41,653.45 : x
  2. Step 2: Convert to fraction form
    75,645.70/104,390.16 = 41,653.45/x
  3. Step 3: Cross multiply
    75,645.70x = 104,390.16 × 41,653.45
  4. Step 4: Simplify right side
    75,645.70x = 4,348,210,310.05
  5. Step 5: Solve for x
    x = 4,348,210,310.05/75,645.70
  6. Step 6: Final answer
    x = 57,481.26

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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.