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Finding the Fourth Proportional to 3,257.68, 4,886.48 and 792.50

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Solution

The fourth proportional to 3,257.68, 4,886.48 and 792.50 is: 1,188.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,257.68 : 4,886.48 = 792.50 : x
  2. Step 2: Convert to fraction form
    3,257.68/4,886.48 = 792.50/x
  3. Step 3: Cross multiply
    3,257.68x = 4,886.48 × 792.50
  4. Step 4: Simplify right side
    3,257.68x = 3,872,535.40
  5. Step 5: Solve for x
    x = 3,872,535.40/3,257.68
  6. Step 6: Final answer
    x = 1,188.74

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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.