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Finding the Fourth Proportional to 28,532.84, 42,776.07 and 11,905.26

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Solution

The fourth proportional to 28,532.84, 42,776.07 and 11,905.26 is: 17,848.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,532.84 : 42,776.07 = 11,905.26 : x
  2. Step 2: Convert to fraction form
    28,532.84/42,776.07 = 11,905.26/x
  3. Step 3: Cross multiply
    28,532.84x = 42,776.07 × 11,905.26
  4. Step 4: Simplify right side
    28,532.84x = 509,260,270.69
  5. Step 5: Solve for x
    x = 509,260,270.69/28,532.84
  6. Step 6: Final answer
    x = 17,848.21

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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.