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Finding the Fourth Proportional to 353,688.30, 488,074.92 and 192,540

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Solution

The fourth proportional to 353,688.30, 488,074.92 and 192,540 is: 265,697.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,688.30 : 488,074.92 = 192,540 : x
  2. Step 2: Convert to fraction form
    353,688.30/488,074.92 = 192,540/x
  3. Step 3: Cross multiply
    353,688.30x = 488,074.92 × 192,540
  4. Step 4: Simplify right side
    353,688.30x = 93,973,945,096.80
  5. Step 5: Solve for x
    x = 93,973,945,096.80/353,688.30
  6. Step 6: Final answer
    x = 265,697.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.