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Finding the Fourth Proportional to 125,958.10, 188,986.38 and 47,053.90

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Solution

The fourth proportional to 125,958.10, 188,986.38 and 47,053.90 is: 70,599.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,958.10 : 188,986.38 = 47,053.90 : x
  2. Step 2: Convert to fraction form
    125,958.10/188,986.38 = 47,053.90/x
  3. Step 3: Cross multiply
    125,958.10x = 188,986.38 × 47,053.90
  4. Step 4: Simplify right side
    125,958.10x = 8,892,546,225.88
  5. Step 5: Solve for x
    x = 8,892,546,225.88/125,958.10
  6. Step 6: Final answer
    x = 70,599.24

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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.