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Finding the Fourth Proportional to 65,740.32, 90,699.48 and 37,425.96

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Solution

The fourth proportional to 65,740.32, 90,699.48 and 37,425.96 is: 51,635.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,740.32 : 90,699.48 = 37,425.96 : x
  2. Step 2: Convert to fraction form
    65,740.32/90,699.48 = 37,425.96/x
  3. Step 3: Cross multiply
    65,740.32x = 90,699.48 × 37,425.96
  4. Step 4: Simplify right side
    65,740.32x = 3,394,515,110.50
  5. Step 5: Solve for x
    x = 3,394,515,110.50/65,740.32
  6. Step 6: Final answer
    x = 51,635.21

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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.