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Finding the Fourth Proportional to 21,975.70, 32,960.17 and 7,184.70

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Solution

The fourth proportional to 21,975.70, 32,960.17 and 7,184.70 is: 10,775.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,975.70 : 32,960.17 = 7,184.70 : x
  2. Step 2: Convert to fraction form
    21,975.70/32,960.17 = 7,184.70/x
  3. Step 3: Cross multiply
    21,975.70x = 32,960.17 × 7,184.70
  4. Step 4: Simplify right side
    21,975.70x = 236,808,933.40
  5. Step 5: Solve for x
    x = 236,808,933.40/21,975.70
  6. Step 6: Final answer
    x = 10,775.94

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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.