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Finding the Fourth Proportional to 112,807.92, 169,212.27 and 28,568.07

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Solution

The fourth proportional to 112,807.92, 169,212.27 and 28,568.07 is: 42,852.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,807.92 : 169,212.27 = 28,568.07 : x
  2. Step 2: Convert to fraction form
    112,807.92/169,212.27 = 28,568.07/x
  3. Step 3: Cross multiply
    112,807.92x = 169,212.27 × 28,568.07
  4. Step 4: Simplify right side
    112,807.92x = 4,834,067,974.22
  5. Step 5: Solve for x
    x = 4,834,067,974.22/112,807.92
  6. Step 6: Final answer
    x = 42,852.20

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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.