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Finding the Fourth Proportional to 15,796.85, 23,689.80 and 8,787.51

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Solution

The fourth proportional to 15,796.85, 23,689.80 and 8,787.51 is: 13,178.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,796.85 : 23,689.80 = 8,787.51 : x
  2. Step 2: Convert to fraction form
    15,796.85/23,689.80 = 8,787.51/x
  3. Step 3: Cross multiply
    15,796.85x = 23,689.80 × 8,787.51
  4. Step 4: Simplify right side
    15,796.85x = 208,174,354.40
  5. Step 5: Solve for x
    x = 208,174,354.40/15,796.85
  6. Step 6: Final answer
    x = 13,178.22

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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.