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Finding the Fourth Proportional to 117,874.08, 176,840.64 and 55,530

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Solution

The fourth proportional to 117,874.08, 176,840.64 and 55,530 is: 83,308.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,874.08 : 176,840.64 = 55,530 : x
  2. Step 2: Convert to fraction form
    117,874.08/176,840.64 = 55,530/x
  3. Step 3: Cross multiply
    117,874.08x = 176,840.64 × 55,530
  4. Step 4: Simplify right side
    117,874.08x = 9,819,960,739.20
  5. Step 5: Solve for x
    x = 9,819,960,739.20/117,874.08
  6. Step 6: Final answer
    x = 83,308.91

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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.