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Finding the Fourth Proportional to 144,812.20, 217,256.70 and 51,308.20

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Solution

The fourth proportional to 144,812.20, 217,256.70 and 51,308.20 is: 76,975.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,812.20 : 217,256.70 = 51,308.20 : x
  2. Step 2: Convert to fraction form
    144,812.20/217,256.70 = 51,308.20/x
  3. Step 3: Cross multiply
    144,812.20x = 217,256.70 × 51,308.20
  4. Step 4: Simplify right side
    144,812.20x = 11,147,050,214.94
  5. Step 5: Solve for x
    x = 11,147,050,214.94/144,812.20
  6. Step 6: Final answer
    x = 76,975.91

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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.