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Finding the Fourth Proportional to 170,441.21, 255,661.81 and 65,260.17

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Solution

The fourth proportional to 170,441.21, 255,661.81 and 65,260.17 is: 97,890.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,441.21 : 255,661.81 = 65,260.17 : x
  2. Step 2: Convert to fraction form
    170,441.21/255,661.81 = 65,260.17/x
  3. Step 3: Cross multiply
    170,441.21x = 255,661.81 × 65,260.17
  4. Step 4: Simplify right side
    170,441.21x = 16,684,533,019.96
  5. Step 5: Solve for x
    x = 16,684,533,019.96/170,441.21
  6. Step 6: Final answer
    x = 97,890.26

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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.