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Finding the Fourth Proportional to 353,438.71, 487,734.15 and 192,289.62

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Solution

The fourth proportional to 353,438.71, 487,734.15 and 192,289.62 is: 265,353.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,438.71 : 487,734.15 = 192,289.62 : x
  2. Step 2: Convert to fraction form
    353,438.71/487,734.15 = 192,289.62/x
  3. Step 3: Cross multiply
    353,438.71x = 487,734.15 × 192,289.62
  4. Step 4: Simplify right side
    353,438.71x = 93,786,214,364.52
  5. Step 5: Solve for x
    x = 93,786,214,364.52/353,438.71
  6. Step 6: Final answer
    x = 265,353.54

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1.5x scale

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.