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Finding the Fourth Proportional to 159,532.85, 220,152.48 and 86,936.37

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Solution

The fourth proportional to 159,532.85, 220,152.48 and 86,936.37 is: 119,970.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,532.85 : 220,152.48 = 86,936.37 : x
  2. Step 2: Convert to fraction form
    159,532.85/220,152.48 = 86,936.37/x
  3. Step 3: Cross multiply
    159,532.85x = 220,152.48 × 86,936.37
  4. Step 4: Simplify right side
    159,532.85x = 19,139,257,457.70
  5. Step 5: Solve for x
    x = 19,139,257,457.70/159,532.85
  6. Step 6: Final answer
    x = 119,970.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.