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Finding the Fourth Proportional to 479,537.45, 719,305.96 and 142,576.64

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Solution

The fourth proportional to 479,537.45, 719,305.96 and 142,576.64 is: 213,864.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,537.45 : 719,305.96 = 142,576.64 : x
  2. Step 2: Convert to fraction form
    479,537.45/719,305.96 = 142,576.64/x
  3. Step 3: Cross multiply
    479,537.45x = 719,305.96 × 142,576.64
  4. Step 4: Simplify right side
    479,537.45x = 102,556,226,908.77
  5. Step 5: Solve for x
    x = 102,556,226,908.77/479,537.45
  6. Step 6: Final answer
    x = 213,864.90

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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.