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Finding the Fourth Proportional to 443,658.36, 665,599.81 and 123,810.20

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Solution

The fourth proportional to 443,658.36, 665,599.81 and 123,810.20 is: 185,746.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,658.36 : 665,599.81 = 123,810.20 : x
  2. Step 2: Convert to fraction form
    443,658.36/665,599.81 = 123,810.20/x
  3. Step 3: Cross multiply
    443,658.36x = 665,599.81 × 123,810.20
  4. Step 4: Simplify right side
    443,658.36x = 82,408,042,466.47
  5. Step 5: Solve for x
    x = 82,408,042,466.47/443,658.36
  6. Step 6: Final answer
    x = 185,746.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.