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Finding the Fourth Proportional to 173,857.80, 260,786.70 and 74,130.60

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Solution

The fourth proportional to 173,857.80, 260,786.70 and 74,130.60 is: 111,195.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,857.80 : 260,786.70 = 74,130.60 : x
  2. Step 2: Convert to fraction form
    173,857.80/260,786.70 = 74,130.60/x
  3. Step 3: Cross multiply
    173,857.80x = 260,786.70 × 74,130.60
  4. Step 4: Simplify right side
    173,857.80x = 19,332,274,543.02
  5. Step 5: Solve for x
    x = 19,332,274,543.02/173,857.80
  6. Step 6: Final answer
    x = 111,195.90

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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.