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Finding the Fourth Proportional to 37,679.40, 56,421.90 and 29,903.40

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Solution

The fourth proportional to 37,679.40, 56,421.90 and 29,903.40 is: 44,777.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,679.40 : 56,421.90 = 29,903.40 : x
  2. Step 2: Convert to fraction form
    37,679.40/56,421.90 = 29,903.40/x
  3. Step 3: Cross multiply
    37,679.40x = 56,421.90 × 29,903.40
  4. Step 4: Simplify right side
    37,679.40x = 1,687,206,644.46
  5. Step 5: Solve for x
    x = 1,687,206,644.46/37,679.40
  6. Step 6: Final answer
    x = 44,777.96

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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.