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Finding the Fourth Proportional to 171,900.70, 257,923.95 and 108,769.30

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Solution

The fourth proportional to 171,900.70, 257,923.95 and 108,769.30 is: 163,200.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,900.70 : 257,923.95 = 108,769.30 : x
  2. Step 2: Convert to fraction form
    171,900.70/257,923.95 = 108,769.30/x
  3. Step 3: Cross multiply
    171,900.70x = 257,923.95 × 108,769.30
  4. Step 4: Simplify right side
    171,900.70x = 28,054,207,494.74
  5. Step 5: Solve for x
    x = 28,054,207,494.74/171,900.70
  6. Step 6: Final answer
    x = 163,200.08

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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.