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Finding the Fourth Proportional to 71,893.95, 99,221.04 and 43,222.96

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Solution

The fourth proportional to 71,893.95, 99,221.04 and 43,222.96 is: 59,652.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,893.95 : 99,221.04 = 43,222.96 : x
  2. Step 2: Convert to fraction form
    71,893.95/99,221.04 = 43,222.96/x
  3. Step 3: Cross multiply
    71,893.95x = 99,221.04 × 43,222.96
  4. Step 4: Simplify right side
    71,893.95x = 4,288,627,009.61
  5. Step 5: Solve for x
    x = 4,288,627,009.61/71,893.95
  6. Step 6: Final answer
    x = 59,652.12

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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.