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Finding the Fourth Proportional to 176,645.71, 243,676.45 and 122,837.31

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Solution

The fourth proportional to 176,645.71, 243,676.45 and 122,837.31 is: 169,449.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    176,645.71 : 243,676.45 = 122,837.31 : x
  2. Step 2: Convert to fraction form
    176,645.71/243,676.45 = 122,837.31/x
  3. Step 3: Cross multiply
    176,645.71x = 243,676.45 × 122,837.31
  4. Step 4: Simplify right side
    176,645.71x = 29,932,559,781.90
  5. Step 5: Solve for x
    x = 29,932,559,781.90/176,645.71
  6. Step 6: Final answer
    x = 169,449.68

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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.