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Finding the Fourth Proportional to 21,951.26, 32,923.52 and 7,160.15

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Solution

The fourth proportional to 21,951.26, 32,923.52 and 7,160.15 is: 10,739.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,951.26 : 32,923.52 = 7,160.15 : x
  2. Step 2: Convert to fraction form
    21,951.26/32,923.52 = 7,160.15/x
  3. Step 3: Cross multiply
    21,951.26x = 32,923.52 × 7,160.15
  4. Step 4: Simplify right side
    21,951.26x = 235,737,177.11
  5. Step 5: Solve for x
    x = 235,737,177.11/21,951.26
  6. Step 6: Final answer
    x = 10,739.12

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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.