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Finding the Fourth Proportional to 159,686.56, 239,488.96 and 47,340.51

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Solution

The fourth proportional to 159,686.56, 239,488.96 and 47,340.51 is: 70,998.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,686.56 : 239,488.96 = 47,340.51 : x
  2. Step 2: Convert to fraction form
    159,686.56/239,488.96 = 47,340.51/x
  3. Step 3: Cross multiply
    159,686.56x = 239,488.96 × 47,340.51
  4. Step 4: Simplify right side
    159,686.56x = 11,337,529,505.77
  5. Step 5: Solve for x
    x = 11,337,529,505.77/159,686.56
  6. Step 6: Final answer
    x = 70,998.65

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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.