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Finding the Fourth Proportional to 20,595.74, 28,405.20 and 12,632.36

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Solution

The fourth proportional to 20,595.74, 28,405.20 and 12,632.36 is: 17,422.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,595.74 : 28,405.20 = 12,632.36 : x
  2. Step 2: Convert to fraction form
    20,595.74/28,405.20 = 12,632.36/x
  3. Step 3: Cross multiply
    20,595.74x = 28,405.20 × 12,632.36
  4. Step 4: Simplify right side
    20,595.74x = 358,824,712.27
  5. Step 5: Solve for x
    x = 358,824,712.27/20,595.74
  6. Step 6: Final answer
    x = 17,422.28

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