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Finding the Fourth Proportional to 144,927.20, 217,429.20 and 51,423.20

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Solution

The fourth proportional to 144,927.20, 217,429.20 and 51,423.20 is: 77,148.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,927.20 : 217,429.20 = 51,423.20 : x
  2. Step 2: Convert to fraction form
    144,927.20/217,429.20 = 51,423.20/x
  3. Step 3: Cross multiply
    144,927.20x = 217,429.20 × 51,423.20
  4. Step 4: Simplify right side
    144,927.20x = 11,180,905,237.44
  5. Step 5: Solve for x
    x = 11,180,905,237.44/144,927.20
  6. Step 6: Final answer
    x = 77,148.43

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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.