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Finding the Fourth Proportional to 18,692.76, 25,779.42 and 18,599.70

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Solution

The fourth proportional to 18,692.76, 25,779.42 and 18,599.70 is: 25,651.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,692.76 : 25,779.42 = 18,599.70 : x
  2. Step 2: Convert to fraction form
    18,692.76/25,779.42 = 18,599.70/x
  3. Step 3: Cross multiply
    18,692.76x = 25,779.42 × 18,599.70
  4. Step 4: Simplify right side
    18,692.76x = 479,489,478.17
  5. Step 5: Solve for x
    x = 479,489,478.17/18,692.76
  6. Step 6: Final answer
    x = 25,651.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.