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Finding the Fourth Proportional to 23,126.40, 34,715.20 and 21,622.40

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Solution

The fourth proportional to 23,126.40, 34,715.20 and 21,622.40 is: 32,457.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,126.40 : 34,715.20 = 21,622.40 : x
  2. Step 2: Convert to fraction form
    23,126.40/34,715.20 = 21,622.40/x
  3. Step 3: Cross multiply
    23,126.40x = 34,715.20 × 21,622.40
  4. Step 4: Simplify right side
    23,126.40x = 750,625,940.48
  5. Step 5: Solve for x
    x = 750,625,940.48/23,126.40
  6. Step 6: Final answer
    x = 32,457.54

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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.