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Finding the Fourth Proportional to 443,433.68, 665,148.60 and 111,008.72

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Solution

The fourth proportional to 443,433.68, 665,148.60 and 111,008.72 is: 166,512.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,433.68 : 665,148.60 = 111,008.72 : x
  2. Step 2: Convert to fraction form
    443,433.68/665,148.60 = 111,008.72/x
  3. Step 3: Cross multiply
    443,433.68x = 665,148.60 × 111,008.72
  4. Step 4: Simplify right side
    443,433.68x = 73,837,294,695.79
  5. Step 5: Solve for x
    x = 73,837,294,695.79/443,433.68
  6. Step 6: Final answer
    x = 166,512.60

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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.