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Finding the Fourth Proportional to 22,195.50, 30,629.80 and 12,259.50

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Solution

The fourth proportional to 22,195.50, 30,629.80 and 12,259.50 is: 16,918.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,195.50 : 30,629.80 = 12,259.50 : x
  2. Step 2: Convert to fraction form
    22,195.50/30,629.80 = 12,259.50/x
  3. Step 3: Cross multiply
    22,195.50x = 30,629.80 × 12,259.50
  4. Step 4: Simplify right side
    22,195.50x = 375,506,033.10
  5. Step 5: Solve for x
    x = 375,506,033.10/22,195.50
  6. Step 6: Final answer
    x = 16,918.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.