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Finding the Fourth Proportional to 354,246.59, 488,835.86 and 199,221.05

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Solution

The fourth proportional to 354,246.59, 488,835.86 and 199,221.05 is: 274,911.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,246.59 : 488,835.86 = 199,221.05 : x
  2. Step 2: Convert to fraction form
    354,246.59/488,835.86 = 199,221.05/x
  3. Step 3: Cross multiply
    354,246.59x = 488,835.86 × 199,221.05
  4. Step 4: Simplify right side
    354,246.59x = 97,386,393,306.85
  5. Step 5: Solve for x
    x = 97,386,393,306.85/354,246.59
  6. Step 6: Final answer
    x = 274,911.31

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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.