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Finding the Fourth Proportional to 132,698.86, 183,129.60 and 75,343.51

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Solution

The fourth proportional to 132,698.86, 183,129.60 and 75,343.51 is: 103,976.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,698.86 : 183,129.60 = 75,343.51 : x
  2. Step 2: Convert to fraction form
    132,698.86/183,129.60 = 75,343.51/x
  3. Step 3: Cross multiply
    132,698.86x = 183,129.60 × 75,343.51
  4. Step 4: Simplify right side
    132,698.86x = 13,797,627,306.72
  5. Step 5: Solve for x
    x = 13,797,627,306.72/132,698.86
  6. Step 6: Final answer
    x = 103,976.99

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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.