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Finding the Fourth Proportional to 104,351.66, 156,389.09 and 54,473.71

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Solution

The fourth proportional to 104,351.66, 156,389.09 and 54,473.71 is: 81,638.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,351.66 : 156,389.09 = 54,473.71 : x
  2. Step 2: Convert to fraction form
    104,351.66/156,389.09 = 54,473.71/x
  3. Step 3: Cross multiply
    104,351.66x = 156,389.09 × 54,473.71
  4. Step 4: Simplify right side
    104,351.66x = 8,519,092,881.51
  5. Step 5: Solve for x
    x = 8,519,092,881.51/104,351.66
  6. Step 6: Final answer
    x = 81,638.31

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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.