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Finding the Fourth Proportional to 117,478.62, 176,216.41 and 28,732.86

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Solution

The fourth proportional to 117,478.62, 176,216.41 and 28,732.86 is: 43,098.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,478.62 : 176,216.41 = 28,732.86 : x
  2. Step 2: Convert to fraction form
    117,478.62/176,216.41 = 28,732.86/x
  3. Step 3: Cross multiply
    117,478.62x = 176,216.41 × 28,732.86
  4. Step 4: Simplify right side
    117,478.62x = 5,063,201,438.23
  5. Step 5: Solve for x
    x = 5,063,201,438.23/117,478.62
  6. Step 6: Final answer
    x = 43,098.92

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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.