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Finding the Fourth Proportional to 5,312.55, 7,961.00 and 4,728.66

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Solution

The fourth proportional to 5,312.55, 7,961.00 and 4,728.66 is: 7,086.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,312.55 : 7,961.00 = 4,728.66 : x
  2. Step 2: Convert to fraction form
    5,312.55/7,961.00 = 4,728.66/x
  3. Step 3: Cross multiply
    5,312.55x = 7,961.00 × 4,728.66
  4. Step 4: Simplify right side
    5,312.55x = 37,644,838.62
  5. Step 5: Solve for x
    x = 37,644,838.62/5,312.55
  6. Step 6: Final answer
    x = 7,086.02

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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.