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Finding the Fourth Proportional to 319,550.76, 441,139.85 and 198,730.97

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Solution

The fourth proportional to 319,550.76, 441,139.85 and 198,730.97 is: 274,348.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,550.76 : 441,139.85 = 198,730.97 : x
  2. Step 2: Convert to fraction form
    319,550.76/441,139.85 = 198,730.97/x
  3. Step 3: Cross multiply
    319,550.76x = 441,139.85 × 198,730.97
  4. Step 4: Simplify right side
    319,550.76x = 87,668,149,302.50
  5. Step 5: Solve for x
    x = 87,668,149,302.50/319,550.76
  6. Step 6: Final answer
    x = 274,348.12

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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.