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Finding the Fourth Proportional to 173,589.60, 260,643.60 and 121,231.20

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Solution

The fourth proportional to 173,589.60, 260,643.60 and 121,231.20 is: 182,027.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,589.60 : 260,643.60 = 121,231.20 : x
  2. Step 2: Convert to fraction form
    173,589.60/260,643.60 = 121,231.20/x
  3. Step 3: Cross multiply
    173,589.60x = 260,643.60 × 121,231.20
  4. Step 4: Simplify right side
    173,589.60x = 31,598,136,400.32
  5. Step 5: Solve for x
    x = 31,598,136,400.32/173,589.60
  6. Step 6: Final answer
    x = 182,027.82

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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.