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Finding the Fourth Proportional to 67,447.38, 100,971.80 and 64,560.54

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Solution

The fourth proportional to 67,447.38, 100,971.80 and 64,560.54 is: 96,650.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,447.38 : 100,971.80 = 64,560.54 : x
  2. Step 2: Convert to fraction form
    67,447.38/100,971.80 = 64,560.54/x
  3. Step 3: Cross multiply
    67,447.38x = 100,971.80 × 64,560.54
  4. Step 4: Simplify right side
    67,447.38x = 6,518,793,932.77
  5. Step 5: Solve for x
    x = 6,518,793,932.77/67,447.38
  6. Step 6: Final answer
    x = 96,650.07

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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.