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Finding the Fourth Proportional to 321,389.88, 443,490.19 and 183,568.12

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Solution

The fourth proportional to 321,389.88, 443,490.19 and 183,568.12 is: 253,308.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,389.88 : 443,490.19 = 183,568.12 : x
  2. Step 2: Convert to fraction form
    321,389.88/443,490.19 = 183,568.12/x
  3. Step 3: Cross multiply
    321,389.88x = 443,490.19 × 183,568.12
  4. Step 4: Simplify right side
    321,389.88x = 81,410,661,343.73
  5. Step 5: Solve for x
    x = 81,410,661,343.73/321,389.88
  6. Step 6: Final answer
    x = 253,308.11

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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.