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Finding the Fourth Proportional to 56,496.72, 84,692.73 and 20,938.23

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Solution

The fourth proportional to 56,496.72, 84,692.73 and 20,938.23 is: 31,387.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,496.72 : 84,692.73 = 20,938.23 : x
  2. Step 2: Convert to fraction form
    56,496.72/84,692.73 = 20,938.23/x
  3. Step 3: Cross multiply
    56,496.72x = 84,692.73 × 20,938.23
  4. Step 4: Simplify right side
    56,496.72x = 1,773,315,860.07
  5. Step 5: Solve for x
    x = 1,773,315,860.07/56,496.72
  6. Step 6: Final answer
    x = 31,387.94

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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.