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Finding the Fourth Proportional to 15,321.80, 22,982.70 and 11,433.80

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Solution

The fourth proportional to 15,321.80, 22,982.70 and 11,433.80 is: 17,150.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,321.80 : 22,982.70 = 11,433.80 : x
  2. Step 2: Convert to fraction form
    15,321.80/22,982.70 = 11,433.80/x
  3. Step 3: Cross multiply
    15,321.80x = 22,982.70 × 11,433.80
  4. Step 4: Simplify right side
    15,321.80x = 262,779,595.26
  5. Step 5: Solve for x
    x = 262,779,595.26/15,321.80
  6. Step 6: Final answer
    x = 17,150.70

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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.