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Finding the Fourth Proportional to 467,430.40, 701,145.60 and 280,806.40

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Solution

The fourth proportional to 467,430.40, 701,145.60 and 280,806.40 is: 421,209.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    467,430.40 : 701,145.60 = 280,806.40 : x
  2. Step 2: Convert to fraction form
    467,430.40/701,145.60 = 280,806.40/x
  3. Step 3: Cross multiply
    467,430.40x = 701,145.60 × 280,806.40
  4. Step 4: Simplify right side
    467,430.40x = 196,886,171,811.84
  5. Step 5: Solve for x
    x = 196,886,171,811.84/467,430.40
  6. Step 6: Final answer
    x = 421,209.60

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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.