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Finding the Fourth Proportional to 354,891.70, 532,143.15 and 144,291.70

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Solution

The fourth proportional to 354,891.70, 532,143.15 and 144,291.70 is: 216,358.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,891.70 : 532,143.15 = 144,291.70 : x
  2. Step 2: Convert to fraction form
    354,891.70/532,143.15 = 144,291.70/x
  3. Step 3: Cross multiply
    354,891.70x = 532,143.15 × 144,291.70
  4. Step 4: Simplify right side
    354,891.70x = 76,783,839,756.86
  5. Step 5: Solve for x
    x = 76,783,839,756.86/354,891.70
  6. Step 6: Final answer
    x = 216,358.51

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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.