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Finding the Fourth Proportional to 136,995.98, 189,174.68 and 86,096.92

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Solution

The fourth proportional to 136,995.98, 189,174.68 and 86,096.92 is: 118,889.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,995.98 : 189,174.68 = 86,096.92 : x
  2. Step 2: Convert to fraction form
    136,995.98/189,174.68 = 86,096.92/x
  3. Step 3: Cross multiply
    136,995.98x = 189,174.68 × 86,096.92
  4. Step 4: Simplify right side
    136,995.98x = 16,287,357,289.99
  5. Step 5: Solve for x
    x = 16,287,357,289.99/136,995.98
  6. Step 6: Final answer
    x = 118,889.31

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1.5x scale

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.