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Finding the Fourth Proportional to 3,276, 4,915.34 and 1,426.16

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Solution

The fourth proportional to 3,276, 4,915.34 and 1,426.16 is: 2,139.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,276 : 4,915.34 = 1,426.16 : x
  2. Step 2: Convert to fraction form
    3,276/4,915.34 = 1,426.16/x
  3. Step 3: Cross multiply
    3,276x = 4,915.34 × 1,426.16
  4. Step 4: Simplify right side
    3,276x = 7,010,061.29
  5. Step 5: Solve for x
    x = 7,010,061.29/3,276
  6. Step 6: Final answer
    x = 2,139.82

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.