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Finding the Fourth Proportional to 15,068.84, 20,787.54 and 9,475.88

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Solution

The fourth proportional to 15,068.84, 20,787.54 and 9,475.88 is: 13,072.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,068.84 : 20,787.54 = 9,475.88 : x
  2. Step 2: Convert to fraction form
    15,068.84/20,787.54 = 9,475.88/x
  3. Step 3: Cross multiply
    15,068.84x = 20,787.54 × 9,475.88
  4. Step 4: Simplify right side
    15,068.84x = 196,980,234.54
  5. Step 5: Solve for x
    x = 196,980,234.54/15,068.84
  6. Step 6: Final answer
    x = 13,072.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.