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Finding the Fourth Proportional to 139,217.56, 208,826.34 and 34,035.28

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Solution

The fourth proportional to 139,217.56, 208,826.34 and 34,035.28 is: 51,052.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,217.56 : 208,826.34 = 34,035.28 : x
  2. Step 2: Convert to fraction form
    139,217.56/208,826.34 = 34,035.28/x
  3. Step 3: Cross multiply
    139,217.56x = 208,826.34 × 34,035.28
  4. Step 4: Simplify right side
    139,217.56x = 7,107,462,953.28
  5. Step 5: Solve for x
    x = 7,107,462,953.28/139,217.56
  6. Step 6: Final answer
    x = 51,052.92

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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.