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Finding the Fourth Proportional to 7,612.56, 10,503 and 4,959

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Solution

The fourth proportional to 7,612.56, 10,503 and 4,959 is: 6,841.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,612.56 : 10,503 = 4,959 : x
  2. Step 2: Convert to fraction form
    7,612.56/10,503 = 4,959/x
  3. Step 3: Cross multiply
    7,612.56x = 10,503 × 4,959
  4. Step 4: Simplify right side
    7,612.56x = 52,084,377
  5. Step 5: Solve for x
    x = 52,084,377/7,612.56
  6. Step 6: Final answer
    x = 6,841.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.