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Finding the Fourth Proportional to 28,251.84, 42,373.44 and 7,476.96

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Solution

The fourth proportional to 28,251.84, 42,373.44 and 7,476.96 is: 11,214.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,251.84 : 42,373.44 = 7,476.96 : x
  2. Step 2: Convert to fraction form
    28,251.84/42,373.44 = 7,476.96/x
  3. Step 3: Cross multiply
    28,251.84x = 42,373.44 × 7,476.96
  4. Step 4: Simplify right side
    28,251.84x = 316,824,515.94
  5. Step 5: Solve for x
    x = 316,824,515.94/28,251.84
  6. Step 6: Final answer
    x = 11,214.30

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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.