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Finding the Fourth Proportional to 803,168.11, 1,108,361.64 and 459,000.09

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Solution

The fourth proportional to 803,168.11, 1,108,361.64 and 459,000.09 is: 633,414.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    803,168.11 : 1,108,361.64 = 459,000.09 : x
  2. Step 2: Convert to fraction form
    803,168.11/1,108,361.64 = 459,000.09/x
  3. Step 3: Cross multiply
    803,168.11x = 1,108,361.64 × 459,000.09
  4. Step 4: Simplify right side
    803,168.11x = 508,738,092,512.55
  5. Step 5: Solve for x
    x = 508,738,092,512.55/803,168.11
  6. Step 6: Final answer
    x = 633,414.21

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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.