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Finding the Fourth Proportional to 136,594.77, 188,619.75 and 85,695

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Solution

The fourth proportional to 136,594.77, 188,619.75 and 85,695 is: 118,333.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,594.77 : 188,619.75 = 85,695 : x
  2. Step 2: Convert to fraction form
    136,594.77/188,619.75 = 85,695/x
  3. Step 3: Cross multiply
    136,594.77x = 188,619.75 × 85,695
  4. Step 4: Simplify right side
    136,594.77x = 16,163,769,154.89
  5. Step 5: Solve for x
    x = 16,163,769,154.89/136,594.77
  6. Step 6: Final answer
    x = 118,333.73

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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.