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Finding the Fourth Proportional to 173,405.80, 260,157.30 and 84,662.20

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Solution

The fourth proportional to 173,405.80, 260,157.30 and 84,662.20 is: 127,017.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,405.80 : 260,157.30 = 84,662.20 : x
  2. Step 2: Convert to fraction form
    173,405.80/260,157.30 = 84,662.20/x
  3. Step 3: Cross multiply
    173,405.80x = 260,157.30 × 84,662.20
  4. Step 4: Simplify right side
    173,405.80x = 22,025,489,364.06
  5. Step 5: Solve for x
    x = 22,025,489,364.06/173,405.80
  6. Step 6: Final answer
    x = 127,017.03

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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.