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Finding the Fourth Proportional to 439,699.27, 659,574.42 and 124,129.75

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Solution

The fourth proportional to 439,699.27, 659,574.42 and 124,129.75 is: 186,201.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,699.27 : 659,574.42 = 124,129.75 : x
  2. Step 2: Convert to fraction form
    439,699.27/659,574.42 = 124,129.75/x
  3. Step 3: Cross multiply
    439,699.27x = 659,574.42 × 124,129.75
  4. Step 4: Simplify right side
    439,699.27x = 81,872,807,861.00
  5. Step 5: Solve for x
    x = 81,872,807,861.00/439,699.27
  6. Step 6: Final answer
    x = 186,201.83

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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.