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Finding the Fourth Proportional to 11,338.70, 16,987.80 and 5,482.40

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Solution

The fourth proportional to 11,338.70, 16,987.80 and 5,482.40 is: 8,213.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,338.70 : 16,987.80 = 5,482.40 : x
  2. Step 2: Convert to fraction form
    11,338.70/16,987.80 = 5,482.40/x
  3. Step 3: Cross multiply
    11,338.70x = 16,987.80 × 5,482.40
  4. Step 4: Simplify right side
    11,338.70x = 93,133,914.72
  5. Step 5: Solve for x
    x = 93,133,914.72/11,338.70
  6. Step 6: Final answer
    x = 8,213.81

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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.