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Finding the Fourth Proportional to 125,298.65, 188,041.39 and 50,419.43

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Solution

The fourth proportional to 125,298.65, 188,041.39 and 50,419.43 is: 75,666.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,298.65 : 188,041.39 = 50,419.43 : x
  2. Step 2: Convert to fraction form
    125,298.65/188,041.39 = 50,419.43/x
  3. Step 3: Cross multiply
    125,298.65x = 188,041.39 × 50,419.43
  4. Step 4: Simplify right side
    125,298.65x = 9,480,940,044.26
  5. Step 5: Solve for x
    x = 9,480,940,044.26/125,298.65
  6. Step 6: Final answer
    x = 75,666.74

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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.