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Finding the Fourth Proportional to 57,903.80, 86,855.49 and 38,038.68

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Solution

The fourth proportional to 57,903.80, 86,855.49 and 38,038.68 is: 57,057.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,903.80 : 86,855.49 = 38,038.68 : x
  2. Step 2: Convert to fraction form
    57,903.80/86,855.49 = 38,038.68/x
  3. Step 3: Cross multiply
    57,903.80x = 86,855.49 × 38,038.68
  4. Step 4: Simplify right side
    57,903.80x = 3,303,868,190.35
  5. Step 5: Solve for x
    x = 3,303,868,190.35/57,903.80
  6. Step 6: Final answer
    x = 57,057.89

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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.