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Finding the Fourth Proportional to 75,698.40, 113,450.40 and 36,170.40

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Solution

The fourth proportional to 75,698.40, 113,450.40 and 36,170.40 is: 54,209.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,698.40 : 113,450.40 = 36,170.40 : x
  2. Step 2: Convert to fraction form
    75,698.40/113,450.40 = 36,170.40/x
  3. Step 3: Cross multiply
    75,698.40x = 113,450.40 × 36,170.40
  4. Step 4: Simplify right side
    75,698.40x = 4,103,546,348.16
  5. Step 5: Solve for x
    x = 4,103,546,348.16/75,698.40
  6. Step 6: Final answer
    x = 54,209.16

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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.