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Finding the Fourth Proportional to 84,851.99, 127,278.28 and 28,692.56

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Solution

The fourth proportional to 84,851.99, 127,278.28 and 28,692.56 is: 43,038.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,851.99 : 127,278.28 = 28,692.56 : x
  2. Step 2: Convert to fraction form
    84,851.99/127,278.28 = 28,692.56/x
  3. Step 3: Cross multiply
    84,851.99x = 127,278.28 × 28,692.56
  4. Step 4: Simplify right side
    84,851.99x = 3,651,939,049.21
  5. Step 5: Solve for x
    x = 3,651,939,049.21/84,851.99
  6. Step 6: Final answer
    x = 43,038.93

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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.