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Finding the Fourth Proportional to 64,767.21, 96,977.88 and 38,090.94

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Solution

The fourth proportional to 64,767.21, 96,977.88 and 38,090.94 is: 57,034.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,767.21 : 96,977.88 = 38,090.94 : x
  2. Step 2: Convert to fraction form
    64,767.21/96,977.88 = 38,090.94/x
  3. Step 3: Cross multiply
    64,767.21x = 96,977.88 × 38,090.94
  4. Step 4: Simplify right side
    64,767.21x = 3,693,978,608.41
  5. Step 5: Solve for x
    x = 3,693,978,608.41/64,767.21
  6. Step 6: Final answer
    x = 57,034.70

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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.