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Finding the Fourth Proportional to 65,987.16, 91,040.87 and 37,304.05

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Solution

The fourth proportional to 65,987.16, 91,040.87 and 37,304.05 is: 51,467.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,987.16 : 91,040.87 = 37,304.05 : x
  2. Step 2: Convert to fraction form
    65,987.16/91,040.87 = 37,304.05/x
  3. Step 3: Cross multiply
    65,987.16x = 91,040.87 × 37,304.05
  4. Step 4: Simplify right side
    65,987.16x = 3,396,193,032.18
  5. Step 5: Solve for x
    x = 3,396,193,032.18/65,987.16
  6. Step 6: Final answer
    x = 51,467.48

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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.