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Finding the Fourth Proportional to 85,909.53, 118,561.63 and 47,676.29

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Solution

The fourth proportional to 85,909.53, 118,561.63 and 47,676.29 is: 65,796.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,909.53 : 118,561.63 = 47,676.29 : x
  2. Step 2: Convert to fraction form
    85,909.53/118,561.63 = 47,676.29/x
  3. Step 3: Cross multiply
    85,909.53x = 118,561.63 × 47,676.29
  4. Step 4: Simplify right side
    85,909.53x = 5,652,578,831.97
  5. Step 5: Solve for x
    x = 5,652,578,831.97/85,909.53
  6. Step 6: Final answer
    x = 65,796.88

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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.