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Finding the Fourth Proportional to 289,323.57, 399,000.15 and 198,519.33

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Solution

The fourth proportional to 289,323.57, 399,000.15 and 198,519.33 is: 273,773.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,323.57 : 399,000.15 = 198,519.33 : x
  2. Step 2: Convert to fraction form
    289,323.57/399,000.15 = 198,519.33/x
  3. Step 3: Cross multiply
    289,323.57x = 399,000.15 × 198,519.33
  4. Step 4: Simplify right side
    289,323.57x = 79,209,242,447.90
  5. Step 5: Solve for x
    x = 79,209,242,447.90/289,323.57
  6. Step 6: Final answer
    x = 273,773.90

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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.