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Finding the Fourth Proportional to 163,940.40, 245,910.60 and 161,482.80

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Solution

The fourth proportional to 163,940.40, 245,910.60 and 161,482.80 is: 242,224.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,940.40 : 245,910.60 = 161,482.80 : x
  2. Step 2: Convert to fraction form
    163,940.40/245,910.60 = 161,482.80/x
  3. Step 3: Cross multiply
    163,940.40x = 245,910.60 × 161,482.80
  4. Step 4: Simplify right side
    163,940.40x = 39,710,332,237.68
  5. Step 5: Solve for x
    x = 39,710,332,237.68/163,940.40
  6. Step 6: Final answer
    x = 242,224.20

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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.