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Finding the Fourth Proportional to 62,669.94, 86,435.64 and 38,809.86

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Solution

The fourth proportional to 62,669.94, 86,435.64 and 38,809.86 is: 53,527.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,669.94 : 86,435.64 = 38,809.86 : x
  2. Step 2: Convert to fraction form
    62,669.94/86,435.64 = 38,809.86/x
  3. Step 3: Cross multiply
    62,669.94x = 86,435.64 × 38,809.86
  4. Step 4: Simplify right side
    62,669.94x = 3,354,555,087.41
  5. Step 5: Solve for x
    x = 3,354,555,087.41/62,669.94
  6. Step 6: Final answer
    x = 53,527.34

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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.