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Finding the Fourth Proportional to 354,336.55, 488,986.65 and 193,194.28

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Solution

The fourth proportional to 354,336.55, 488,986.65 and 193,194.28 is: 266,609.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,336.55 : 488,986.65 = 193,194.28 : x
  2. Step 2: Convert to fraction form
    354,336.55/488,986.65 = 193,194.28/x
  3. Step 3: Cross multiply
    354,336.55x = 488,986.65 × 193,194.28
  4. Step 4: Simplify right side
    354,336.55x = 94,469,423,776.36
  5. Step 5: Solve for x
    x = 94,469,423,776.36/354,336.55
  6. Step 6: Final answer
    x = 266,609.31

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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.