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Finding the Fourth Proportional to 48,726.78, 73,090.17 and 11,790.78

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Solution

The fourth proportional to 48,726.78, 73,090.17 and 11,790.78 is: 17,686.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,726.78 : 73,090.17 = 11,790.78 : x
  2. Step 2: Convert to fraction form
    48,726.78/73,090.17 = 11,790.78/x
  3. Step 3: Cross multiply
    48,726.78x = 73,090.17 × 11,790.78
  4. Step 4: Simplify right side
    48,726.78x = 861,790,114.63
  5. Step 5: Solve for x
    x = 861,790,114.63/48,726.78
  6. Step 6: Final answer
    x = 17,686.17

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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.