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Finding the Fourth Proportional to 4,998.78, 7,492.46 and 3,125.52

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Solution

The fourth proportional to 4,998.78, 7,492.46 and 3,125.52 is: 4,684.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,998.78 : 7,492.46 = 3,125.52 : x
  2. Step 2: Convert to fraction form
    4,998.78/7,492.46 = 3,125.52/x
  3. Step 3: Cross multiply
    4,998.78x = 7,492.46 × 3,125.52
  4. Step 4: Simplify right side
    4,998.78x = 23,417,817.95
  5. Step 5: Solve for x
    x = 23,417,817.95/4,998.78
  6. Step 6: Final answer
    x = 4,684.71

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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.