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Finding the Fourth Proportional to 124,680.40, 187,481.40 and 104,405.20

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Solution

The fourth proportional to 124,680.40, 187,481.40 and 104,405.20 is: 156,993.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,680.40 : 187,481.40 = 104,405.20 : x
  2. Step 2: Convert to fraction form
    124,680.40/187,481.40 = 104,405.20/x
  3. Step 3: Cross multiply
    124,680.40x = 187,481.40 × 104,405.20
  4. Step 4: Simplify right side
    124,680.40x = 19,574,033,063.28
  5. Step 5: Solve for x
    x = 19,574,033,063.28/124,680.40
  6. Step 6: Final answer
    x = 156,993.67

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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.