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Finding the Fourth Proportional to 441,658.16, 662,513.16 and 126,090.80

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Solution

The fourth proportional to 441,658.16, 662,513.16 and 126,090.80 is: 189,143.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,658.16 : 662,513.16 = 126,090.80 : x
  2. Step 2: Convert to fraction form
    441,658.16/662,513.16 = 126,090.80/x
  3. Step 3: Cross multiply
    441,658.16x = 662,513.16 × 126,090.80
  4. Step 4: Simplify right side
    441,658.16x = 83,536,814,354.93
  5. Step 5: Solve for x
    x = 83,536,814,354.93/441,658.16
  6. Step 6: Final answer
    x = 189,143.60

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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.