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Finding the Fourth Proportional to 71,671.77, 107,479.98 and 34,212.51

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Solution

The fourth proportional to 71,671.77, 107,479.98 and 34,212.51 is: 51,305.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,671.77 : 107,479.98 = 34,212.51 : x
  2. Step 2: Convert to fraction form
    71,671.77/107,479.98 = 34,212.51/x
  3. Step 3: Cross multiply
    71,671.77x = 107,479.98 × 34,212.51
  4. Step 4: Simplify right side
    71,671.77x = 3,677,159,890.55
  5. Step 5: Solve for x
    x = 3,677,159,890.55/71,671.77
  6. Step 6: Final answer
    x = 51,305.55

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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.