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Finding the Fourth Proportional to 17,813.52, 26,742.15 and 10,421.46

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Solution

The fourth proportional to 17,813.52, 26,742.15 and 10,421.46 is: 15,644.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,813.52 : 26,742.15 = 10,421.46 : x
  2. Step 2: Convert to fraction form
    17,813.52/26,742.15 = 10,421.46/x
  3. Step 3: Cross multiply
    17,813.52x = 26,742.15 × 10,421.46
  4. Step 4: Simplify right side
    17,813.52x = 278,692,246.54
  5. Step 5: Solve for x
    x = 278,692,246.54/17,813.52
  6. Step 6: Final answer
    x = 15,644.98

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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.