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Finding the Fourth Proportional to 136,316.48, 204,372.48 and 91,818.32

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Solution

The fourth proportional to 136,316.48, 204,372.48 and 91,818.32 is: 137,658.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,316.48 : 204,372.48 = 91,818.32 : x
  2. Step 2: Convert to fraction form
    136,316.48/204,372.48 = 91,818.32/x
  3. Step 3: Cross multiply
    136,316.48x = 204,372.48 × 91,818.32
  4. Step 4: Simplify right side
    136,316.48x = 18,765,137,767.83
  5. Step 5: Solve for x
    x = 18,765,137,767.83/136,316.48
  6. Step 6: Final answer
    x = 137,658.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.