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Finding the Fourth Proportional to 11,178.44, 15,423.54 and 6,210.44

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Solution

The fourth proportional to 11,178.44, 15,423.54 and 6,210.44 is: 8,568.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,178.44 : 15,423.54 = 6,210.44 : x
  2. Step 2: Convert to fraction form
    11,178.44/15,423.54 = 6,210.44/x
  3. Step 3: Cross multiply
    11,178.44x = 15,423.54 × 6,210.44
  4. Step 4: Simplify right side
    11,178.44x = 95,786,969.76
  5. Step 5: Solve for x
    x = 95,786,969.76/11,178.44
  6. Step 6: Final answer
    x = 8,568.90

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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.