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Finding the Fourth Proportional to 183,785.70, 253,664.55 and 115,842.90

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Solution

The fourth proportional to 183,785.70, 253,664.55 and 115,842.90 is: 159,888.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    183,785.70 : 253,664.55 = 115,842.90 : x
  2. Step 2: Convert to fraction form
    183,785.70/253,664.55 = 115,842.90/x
  3. Step 3: Cross multiply
    183,785.70x = 253,664.55 × 115,842.90
  4. Step 4: Simplify right side
    183,785.70x = 29,385,237,099.20
  5. Step 5: Solve for x
    x = 29,385,237,099.20/183,785.70
  6. Step 6: Final answer
    x = 159,888.59

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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.