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Finding the Fourth Proportional to 173,858.80, 260,788.20 and 74,131.60

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Solution

The fourth proportional to 173,858.80, 260,788.20 and 74,131.60 is: 111,197.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,858.80 : 260,788.20 = 74,131.60 : x
  2. Step 2: Convert to fraction form
    173,858.80/260,788.20 = 74,131.60/x
  3. Step 3: Cross multiply
    173,858.80x = 260,788.20 × 74,131.60
  4. Step 4: Simplify right side
    173,858.80x = 19,332,646,527.12
  5. Step 5: Solve for x
    x = 19,332,646,527.12/173,858.80
  6. Step 6: Final answer
    x = 111,197.40

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1.5x scale

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.