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Finding the Fourth Proportional to 137,591.29, 189,795.39 and 86,523.22

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Solution

The fourth proportional to 137,591.29, 189,795.39 and 86,523.22 is: 119,351.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,591.29 : 189,795.39 = 86,523.22 : x
  2. Step 2: Convert to fraction form
    137,591.29/189,795.39 = 86,523.22/x
  3. Step 3: Cross multiply
    137,591.29x = 189,795.39 × 86,523.22
  4. Step 4: Simplify right side
    137,591.29x = 16,421,708,283.96
  5. Step 5: Solve for x
    x = 16,421,708,283.96/137,591.29
  6. Step 6: Final answer
    x = 119,351.37

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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.