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Finding the Fourth Proportional to 109,051.74, 150,479.93 and 60,645.83

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Solution

The fourth proportional to 109,051.74, 150,479.93 and 60,645.83 is: 83,684.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,051.74 : 150,479.93 = 60,645.83 : x
  2. Step 2: Convert to fraction form
    109,051.74/150,479.93 = 60,645.83/x
  3. Step 3: Cross multiply
    109,051.74x = 150,479.93 × 60,645.83
  4. Step 4: Simplify right side
    109,051.74x = 9,125,979,197.56
  5. Step 5: Solve for x
    x = 9,125,979,197.56/109,051.74
  6. Step 6: Final answer
    x = 83,684.86

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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.