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Finding the Fourth Proportional to 355,806.54, 533,920.34 and 131,323.34

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Solution

The fourth proportional to 355,806.54, 533,920.34 and 131,323.34 is: 197,062.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,806.54 : 533,920.34 = 131,323.34 : x
  2. Step 2: Convert to fraction form
    355,806.54/533,920.34 = 131,323.34/x
  3. Step 3: Cross multiply
    355,806.54x = 533,920.34 × 131,323.34
  4. Step 4: Simplify right side
    355,806.54x = 70,116,204,005.84
  5. Step 5: Solve for x
    x = 70,116,204,005.84/355,806.54
  6. Step 6: Final answer
    x = 197,062.72

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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.