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Finding the Fourth Proportional to 14,195.18, 21,305.94 and 7,180.18

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Solution

The fourth proportional to 14,195.18, 21,305.94 and 7,180.18 is: 10,776.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,195.18 : 21,305.94 = 7,180.18 : x
  2. Step 2: Convert to fraction form
    14,195.18/21,305.94 = 7,180.18/x
  3. Step 3: Cross multiply
    14,195.18x = 21,305.94 × 7,180.18
  4. Step 4: Simplify right side
    14,195.18x = 152,980,404.08
  5. Step 5: Solve for x
    x = 152,980,404.08/14,195.18
  6. Step 6: Final answer
    x = 10,776.92

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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.