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Finding the Fourth Proportional to 173,392.60, 260,236.56 and 68,285.40

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Solution

The fourth proportional to 173,392.60, 260,236.56 and 68,285.40 is: 102,486.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,392.60 : 260,236.56 = 68,285.40 : x
  2. Step 2: Convert to fraction form
    173,392.60/260,236.56 = 68,285.40/x
  3. Step 3: Cross multiply
    173,392.60x = 260,236.56 × 68,285.40
  4. Step 4: Simplify right side
    173,392.60x = 17,770,357,594.22
  5. Step 5: Solve for x
    x = 17,770,357,594.22/173,392.60
  6. Step 6: Final answer
    x = 102,486.25

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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.