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Finding the Fourth Proportional to 125,479.60, 188,053.24 and 92,043.12

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Solution

The fourth proportional to 125,479.60, 188,053.24 and 92,043.12 is: 137,942.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,479.60 : 188,053.24 = 92,043.12 : x
  2. Step 2: Convert to fraction form
    125,479.60/188,053.24 = 92,043.12/x
  3. Step 3: Cross multiply
    125,479.60x = 188,053.24 × 92,043.12
  4. Step 4: Simplify right side
    125,479.60x = 17,309,006,935.71
  5. Step 5: Solve for x
    x = 17,309,006,935.71/125,479.60
  6. Step 6: Final answer
    x = 137,942.80

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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.