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Finding the Fourth Proportional to 173,560.96, 260,491.20 and 84,880

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Solution

The fourth proportional to 173,560.96, 260,491.20 and 84,880 is: 127,393.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,560.96 : 260,491.20 = 84,880 : x
  2. Step 2: Convert to fraction form
    173,560.96/260,491.20 = 84,880/x
  3. Step 3: Cross multiply
    173,560.96x = 260,491.20 × 84,880
  4. Step 4: Simplify right side
    173,560.96x = 22,110,493,056
  5. Step 5: Solve for x
    x = 22,110,493,056/173,560.96
  6. Step 6: Final answer
    x = 127,393.24

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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.