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Finding the Fourth Proportional to 10,461.80, 15,692.88 and 2,670.68

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Solution

The fourth proportional to 10,461.80, 15,692.88 and 2,670.68 is: 4,006.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,461.80 : 15,692.88 = 2,670.68 : x
  2. Step 2: Convert to fraction form
    10,461.80/15,692.88 = 2,670.68/x
  3. Step 3: Cross multiply
    10,461.80x = 15,692.88 × 2,670.68
  4. Step 4: Simplify right side
    10,461.80x = 41,910,660.76
  5. Step 5: Solve for x
    x = 41,910,660.76/10,461.80
  6. Step 6: Final answer
    x = 4,006.07

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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.