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Finding the Fourth Proportional to 443,999.54, 612,310.50 and 290,981.99

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Solution

The fourth proportional to 443,999.54, 612,310.50 and 290,981.99 is: 401,287.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,999.54 : 612,310.50 = 290,981.99 : x
  2. Step 2: Convert to fraction form
    443,999.54/612,310.50 = 290,981.99/x
  3. Step 3: Cross multiply
    443,999.54x = 612,310.50 × 290,981.99
  4. Step 4: Simplify right side
    443,999.54x = 178,171,324,726.34
  5. Step 5: Solve for x
    x = 178,171,324,726.34/443,999.54
  6. Step 6: Final answer
    x = 401,287.19

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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.