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Finding the Fourth Proportional to 73,903.50, 101,989.35 and 40,371.66

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Solution

The fourth proportional to 73,903.50, 101,989.35 and 40,371.66 is: 55,714.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,903.50 : 101,989.35 = 40,371.66 : x
  2. Step 2: Convert to fraction form
    73,903.50/101,989.35 = 40,371.66/x
  3. Step 3: Cross multiply
    73,903.50x = 101,989.35 × 40,371.66
  4. Step 4: Simplify right side
    73,903.50x = 4,117,479,361.82
  5. Step 5: Solve for x
    x = 4,117,479,361.82/73,903.50
  6. Step 6: Final answer
    x = 55,714.27

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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.