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Finding the Fourth Proportional to 21,609.68, 32,414.54 and 5,193.68

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Solution

The fourth proportional to 21,609.68, 32,414.54 and 5,193.68 is: 7,790.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,609.68 : 32,414.54 = 5,193.68 : x
  2. Step 2: Convert to fraction form
    21,609.68/32,414.54 = 5,193.68/x
  3. Step 3: Cross multiply
    21,609.68x = 32,414.54 × 5,193.68
  4. Step 4: Simplify right side
    21,609.68x = 168,350,748.11
  5. Step 5: Solve for x
    x = 168,350,748.11/21,609.68
  6. Step 6: Final answer
    x = 7,790.52

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1.5x scale

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.