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Finding the Fourth Proportional to 137,613.00, 189,906.61 and 77,186.87

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Solution

The fourth proportional to 137,613.00, 189,906.61 and 77,186.87 is: 106,518.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,613.00 : 189,906.61 = 77,186.87 : x
  2. Step 2: Convert to fraction form
    137,613.00/189,906.61 = 77,186.87/x
  3. Step 3: Cross multiply
    137,613.00x = 189,906.61 × 77,186.87
  4. Step 4: Simplify right side
    137,613.00x = 14,658,296,387.86
  5. Step 5: Solve for x
    x = 14,658,296,387.86/137,613.00
  6. Step 6: Final answer
    x = 106,518.26

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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.