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Finding the Fourth Proportional to 517,042.20, 775,580.58 and 143,033.88

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Solution

The fourth proportional to 517,042.20, 775,580.58 and 143,033.88 is: 214,555.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,042.20 : 775,580.58 = 143,033.88 : x
  2. Step 2: Convert to fraction form
    517,042.20/775,580.58 = 143,033.88/x
  3. Step 3: Cross multiply
    517,042.20x = 775,580.58 × 143,033.88
  4. Step 4: Simplify right side
    517,042.20x = 110,934,299,610.05
  5. Step 5: Solve for x
    x = 110,934,299,610.05/517,042.20
  6. Step 6: Final answer
    x = 214,555.60

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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.