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Finding the Fourth Proportional to 65,042.40, 97,563.60 and 20,672.40

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Solution

The fourth proportional to 65,042.40, 97,563.60 and 20,672.40 is: 31,008.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,042.40 : 97,563.60 = 20,672.40 : x
  2. Step 2: Convert to fraction form
    65,042.40/97,563.60 = 20,672.40/x
  3. Step 3: Cross multiply
    65,042.40x = 97,563.60 × 20,672.40
  4. Step 4: Simplify right side
    65,042.40x = 2,016,873,764.64
  5. Step 5: Solve for x
    x = 2,016,873,764.64/65,042.40
  6. Step 6: Final answer
    x = 31,008.60

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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.