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Finding the Fourth Proportional to 51,003.88, 70,388.58 and 28,649.32

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Solution

The fourth proportional to 51,003.88, 70,388.58 and 28,649.32 is: 39,537.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,003.88 : 70,388.58 = 28,649.32 : x
  2. Step 2: Convert to fraction form
    51,003.88/70,388.58 = 28,649.32/x
  3. Step 3: Cross multiply
    51,003.88x = 70,388.58 × 28,649.32
  4. Step 4: Simplify right side
    51,003.88x = 2,016,584,952.77
  5. Step 5: Solve for x
    x = 2,016,584,952.77/51,003.88
  6. Step 6: Final answer
    x = 39,537.87

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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.