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Finding the Fourth Proportional to 7,750.84, 11,624.64 and 2,555.50

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Solution

The fourth proportional to 7,750.84, 11,624.64 and 2,555.50 is: 3,832.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,750.84 : 11,624.64 = 2,555.50 : x
  2. Step 2: Convert to fraction form
    7,750.84/11,624.64 = 2,555.50/x
  3. Step 3: Cross multiply
    7,750.84x = 11,624.64 × 2,555.50
  4. Step 4: Simplify right side
    7,750.84x = 29,706,767.52
  5. Step 5: Solve for x
    x = 29,706,767.52/7,750.84
  6. Step 6: Final answer
    x = 3,832.72

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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.