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Finding the Fourth Proportional to 11,807.61, 17,712.45 and 3,042.51

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Solution

The fourth proportional to 11,807.61, 17,712.45 and 3,042.51 is: 4,564.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,807.61 : 17,712.45 = 3,042.51 : x
  2. Step 2: Convert to fraction form
    11,807.61/17,712.45 = 3,042.51/x
  3. Step 3: Cross multiply
    11,807.61x = 17,712.45 × 3,042.51
  4. Step 4: Simplify right side
    11,807.61x = 53,890,306.25
  5. Step 5: Solve for x
    x = 53,890,306.25/11,807.61
  6. Step 6: Final answer
    x = 4,564.03

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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.