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Finding the Fourth Proportional to 67,615.20, 101,422.80 and 48,952.80

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Solution

The fourth proportional to 67,615.20, 101,422.80 and 48,952.80 is: 73,429.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,615.20 : 101,422.80 = 48,952.80 : x
  2. Step 2: Convert to fraction form
    67,615.20/101,422.80 = 48,952.80/x
  3. Step 3: Cross multiply
    67,615.20x = 101,422.80 × 48,952.80
  4. Step 4: Simplify right side
    67,615.20x = 4,964,930,043.84
  5. Step 5: Solve for x
    x = 4,964,930,043.84/67,615.20
  6. Step 6: Final answer
    x = 73,429.20

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1.5x scale

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.