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Finding the Fourth Proportional to 189,036.59, 260,867.66 and 108,462.31

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Solution

The fourth proportional to 189,036.59, 260,867.66 and 108,462.31 is: 149,676.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,036.59 : 260,867.66 = 108,462.31 : x
  2. Step 2: Convert to fraction form
    189,036.59/260,867.66 = 108,462.31/x
  3. Step 3: Cross multiply
    189,036.59x = 260,867.66 × 108,462.31
  4. Step 4: Simplify right side
    189,036.59x = 28,294,307,813.41
  5. Step 5: Solve for x
    x = 28,294,307,813.41/189,036.59
  6. Step 6: Final answer
    x = 149,676.36

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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.