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Finding the Fourth Proportional to 11,690.32, 17,532.90 and 3,368.50

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Solution

The fourth proportional to 11,690.32, 17,532.90 and 3,368.50 is: 5,052.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,690.32 : 17,532.90 = 3,368.50 : x
  2. Step 2: Convert to fraction form
    11,690.32/17,532.90 = 3,368.50/x
  3. Step 3: Cross multiply
    11,690.32x = 17,532.90 × 3,368.50
  4. Step 4: Simplify right side
    11,690.32x = 59,059,573.65
  5. Step 5: Solve for x
    x = 59,059,573.65/11,690.32
  6. Step 6: Final answer
    x = 5,052.01

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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.