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Finding the Fourth Proportional to 67,051.20, 100,576.80 and 25,492.80

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Solution

The fourth proportional to 67,051.20, 100,576.80 and 25,492.80 is: 38,239.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,051.20 : 100,576.80 = 25,492.80 : x
  2. Step 2: Convert to fraction form
    67,051.20/100,576.80 = 25,492.80/x
  3. Step 3: Cross multiply
    67,051.20x = 100,576.80 × 25,492.80
  4. Step 4: Simplify right side
    67,051.20x = 2,563,984,247.04
  5. Step 5: Solve for x
    x = 2,563,984,247.04/67,051.20
  6. Step 6: Final answer
    x = 38,239.20

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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.