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Finding the Fourth Proportional to 51,239.58, 76,350.01 and 45,649.98

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Solution

The fourth proportional to 51,239.58, 76,350.01 and 45,649.98 is: 68,021.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,239.58 : 76,350.01 = 45,649.98 : x
  2. Step 2: Convert to fraction form
    51,239.58/76,350.01 = 45,649.98/x
  3. Step 3: Cross multiply
    51,239.58x = 76,350.01 × 45,649.98
  4. Step 4: Simplify right side
    51,239.58x = 3,485,375,819.50
  5. Step 5: Solve for x
    x = 3,485,375,819.50/51,239.58
  6. Step 6: Final answer
    x = 68,021.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.