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Finding the Fourth Proportional to 11,673.75, 16,109.78 and 7,482

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Solution

The fourth proportional to 11,673.75, 16,109.78 and 7,482 is: 10,325.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,673.75 : 16,109.78 = 7,482 : x
  2. Step 2: Convert to fraction form
    11,673.75/16,109.78 = 7,482/x
  3. Step 3: Cross multiply
    11,673.75x = 16,109.78 × 7,482
  4. Step 4: Simplify right side
    11,673.75x = 120,533,336.55
  5. Step 5: Solve for x
    x = 120,533,336.55/11,673.75
  6. Step 6: Final answer
    x = 10,325.16

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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.