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Finding the Fourth Proportional to 28,526, 42,806.80 and 13,736.48

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Solution

The fourth proportional to 28,526, 42,806.80 and 13,736.48 is: 20,613.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,526 : 42,806.80 = 13,736.48 : x
  2. Step 2: Convert to fraction form
    28,526/42,806.80 = 13,736.48/x
  3. Step 3: Cross multiply
    28,526x = 42,806.80 × 13,736.48
  4. Step 4: Simplify right side
    28,526x = 588,014,752.06
  5. Step 5: Solve for x
    x = 588,014,752.06/28,526
  6. Step 6: Final answer
    x = 20,613.29

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.