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Finding the Fourth Proportional to 70,213.80, 105,317.46 and 17,622.12

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Solution

The fourth proportional to 70,213.80, 105,317.46 and 17,622.12 is: 26,432.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,213.80 : 105,317.46 = 17,622.12 : x
  2. Step 2: Convert to fraction form
    70,213.80/105,317.46 = 17,622.12/x
  3. Step 3: Cross multiply
    70,213.80x = 105,317.46 × 17,622.12
  4. Step 4: Simplify right side
    70,213.80x = 1,855,916,918.22
  5. Step 5: Solve for x
    x = 1,855,916,918.22/70,213.80
  6. Step 6: Final answer
    x = 26,432.37

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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.