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Finding the Fourth Proportional to 65,701.80, 90,676.89 and 43,059.96

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Solution

The fourth proportional to 65,701.80, 90,676.89 and 43,059.96 is: 59,428.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,701.80 : 90,676.89 = 43,059.96 : x
  2. Step 2: Convert to fraction form
    65,701.80/90,676.89 = 43,059.96/x
  3. Step 3: Cross multiply
    65,701.80x = 90,676.89 × 43,059.96
  4. Step 4: Simplify right side
    65,701.80x = 3,904,543,256.32
  5. Step 5: Solve for x
    x = 3,904,543,256.32/65,701.80
  6. Step 6: Final answer
    x = 59,428.25

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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.