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Finding the Fourth Proportional to 171,876.33, 257,829.57 and 70,680.60

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Solution

The fourth proportional to 171,876.33, 257,829.57 and 70,680.60 is: 106,027.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,876.33 : 257,829.57 = 70,680.60 : x
  2. Step 2: Convert to fraction form
    171,876.33/257,829.57 = 70,680.60/x
  3. Step 3: Cross multiply
    171,876.33x = 257,829.57 × 70,680.60
  4. Step 4: Simplify right side
    171,876.33x = 18,223,548,705.34
  5. Step 5: Solve for x
    x = 18,223,548,705.34/171,876.33
  6. Step 6: Final answer
    x = 106,027.10

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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.