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Finding the Fourth Proportional to 321,588.09, 443,818.17 and 178,394.40

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Solution

The fourth proportional to 321,588.09, 443,818.17 and 178,394.40 is: 246,199.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,588.09 : 443,818.17 = 178,394.40 : x
  2. Step 2: Convert to fraction form
    321,588.09/443,818.17 = 178,394.40/x
  3. Step 3: Cross multiply
    321,588.09x = 443,818.17 × 178,394.40
  4. Step 4: Simplify right side
    321,588.09x = 79,174,676,146.25
  5. Step 5: Solve for x
    x = 79,174,676,146.25/321,588.09
  6. Step 6: Final answer
    x = 246,199.03

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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.