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Finding the Fourth Proportional to 354,358.62, 489,004.20 and 193,216.77

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Solution

The fourth proportional to 354,358.62, 489,004.20 and 193,216.77 is: 266,633.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,358.62 : 489,004.20 = 193,216.77 : x
  2. Step 2: Convert to fraction form
    354,358.62/489,004.20 = 193,216.77/x
  3. Step 3: Cross multiply
    354,358.62x = 489,004.20 × 193,216.77
  4. Step 4: Simplify right side
    354,358.62x = 94,483,812,040.43
  5. Step 5: Solve for x
    x = 94,483,812,040.43/354,358.62
  6. Step 6: Final answer
    x = 266,633.31

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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.