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Finding the Fourth Proportional to 361,109.40, 541,332.39 and 124,395.81

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Solution

The fourth proportional to 361,109.40, 541,332.39 and 124,395.81 is: 186,479.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    361,109.40 : 541,332.39 = 124,395.81 : x
  2. Step 2: Convert to fraction form
    361,109.40/541,332.39 = 124,395.81/x
  3. Step 3: Cross multiply
    361,109.40x = 541,332.39 × 124,395.81
  4. Step 4: Simplify right side
    361,109.40x = 67,339,481,133.29
  5. Step 5: Solve for x
    x = 67,339,481,133.29/361,109.40
  6. Step 6: Final answer
    x = 186,479.45

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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.