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Finding the Fourth Proportional to 8,915.16, 13,377.30 and 3,654

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Solution

The fourth proportional to 8,915.16, 13,377.30 and 3,654 is: 5,482.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.16 : 13,377.30 = 3,654 : x
  2. Step 2: Convert to fraction form
    8,915.16/13,377.30 = 3,654/x
  3. Step 3: Cross multiply
    8,915.16x = 13,377.30 × 3,654
  4. Step 4: Simplify right side
    8,915.16x = 48,880,654.20
  5. Step 5: Solve for x
    x = 48,880,654.20/8,915.16
  6. Step 6: Final answer
    x = 5,482.87

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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.