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Finding the Fourth Proportional to 173,890.40, 260,738.40 and 74,033.60

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Solution

The fourth proportional to 173,890.40, 260,738.40 and 74,033.60 is: 111,009.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,890.40 : 260,738.40 = 74,033.60 : x
  2. Step 2: Convert to fraction form
    173,890.40/260,738.40 = 74,033.60/x
  3. Step 3: Cross multiply
    173,890.40x = 260,738.40 × 74,033.60
  4. Step 4: Simplify right side
    173,890.40x = 19,303,402,410.24
  5. Step 5: Solve for x
    x = 19,303,402,410.24/173,890.40
  6. Step 6: Final answer
    x = 111,009.02

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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.