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Finding the Fourth Proportional to 7,657.31, 11,475 and 4,363.60

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Solution

The fourth proportional to 7,657.31, 11,475 and 4,363.60 is: 6,539.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,657.31 : 11,475 = 4,363.60 : x
  2. Step 2: Convert to fraction form
    7,657.31/11,475 = 4,363.60/x
  3. Step 3: Cross multiply
    7,657.31x = 11,475 × 4,363.60
  4. Step 4: Simplify right side
    7,657.31x = 50,072,310.00
  5. Step 5: Solve for x
    x = 50,072,310.00/7,657.31
  6. Step 6: Final answer
    x = 6,539.15

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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.