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Finding the Fourth Proportional to 170,636.80, 255,955.20 and 163,724.80

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Solution

The fourth proportional to 170,636.80, 255,955.20 and 163,724.80 is: 245,587.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,636.80 : 255,955.20 = 163,724.80 : x
  2. Step 2: Convert to fraction form
    170,636.80/255,955.20 = 163,724.80/x
  3. Step 3: Cross multiply
    170,636.80x = 255,955.20 × 163,724.80
  4. Step 4: Simplify right side
    170,636.80x = 41,906,213,928.96
  5. Step 5: Solve for x
    x = 41,906,213,928.96/170,636.80
  6. Step 6: Final answer
    x = 245,587.20

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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.