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Finding the Fourth Proportional to 170,632.71, 255,839.70 and 70,861.77

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Solution

The fourth proportional to 170,632.71, 255,839.70 and 70,861.77 is: 106,247.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,632.71 : 255,839.70 = 70,861.77 : x
  2. Step 2: Convert to fraction form
    170,632.71/255,839.70 = 70,861.77/x
  3. Step 3: Cross multiply
    170,632.71x = 255,839.70 × 70,861.77
  4. Step 4: Simplify right side
    170,632.71x = 18,129,253,978.27
  5. Step 5: Solve for x
    x = 18,129,253,978.27/170,632.71
  6. Step 6: Final answer
    x = 106,247.24

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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.