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Finding the Fourth Proportional to 4,892.85, 7,307.91 and 3,915.99

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Solution

The fourth proportional to 4,892.85, 7,307.91 and 3,915.99 is: 5,848.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,892.85 : 7,307.91 = 3,915.99 : x
  2. Step 2: Convert to fraction form
    4,892.85/7,307.91 = 3,915.99/x
  3. Step 3: Cross multiply
    4,892.85x = 7,307.91 × 3,915.99
  4. Step 4: Simplify right side
    4,892.85x = 28,617,702.48
  5. Step 5: Solve for x
    x = 28,617,702.48/4,892.85
  6. Step 6: Final answer
    x = 5,848.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.