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Finding the Fourth Proportional to 196,841.75, 294,818.71 and 91,438.91

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Solution

The fourth proportional to 196,841.75, 294,818.71 and 91,438.91 is: 136,952.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,841.75 : 294,818.71 = 91,438.91 : x
  2. Step 2: Convert to fraction form
    196,841.75/294,818.71 = 91,438.91/x
  3. Step 3: Cross multiply
    196,841.75x = 294,818.71 × 91,438.91
  4. Step 4: Simplify right side
    196,841.75x = 26,957,899,787.32
  5. Step 5: Solve for x
    x = 26,957,899,787.32/196,841.75
  6. Step 6: Final answer
    x = 136,952.15

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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.