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Finding the Fourth Proportional to 64,958.96, 89,610.28 and 39,458.52

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Solution

The fourth proportional to 64,958.96, 89,610.28 and 39,458.52 is: 54,432.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,958.96 : 89,610.28 = 39,458.52 : x
  2. Step 2: Convert to fraction form
    64,958.96/89,610.28 = 39,458.52/x
  3. Step 3: Cross multiply
    64,958.96x = 89,610.28 × 39,458.52
  4. Step 4: Simplify right side
    64,958.96x = 3,535,889,025.59
  5. Step 5: Solve for x
    x = 3,535,889,025.59/64,958.96
  6. Step 6: Final answer
    x = 54,432.66

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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.