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Finding the Fourth Proportional to 125,668.50, 188,536.77 and 42,562.50

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Solution

The fourth proportional to 125,668.50, 188,536.77 and 42,562.50 is: 63,855.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,668.50 : 188,536.77 = 42,562.50 : x
  2. Step 2: Convert to fraction form
    125,668.50/188,536.77 = 42,562.50/x
  3. Step 3: Cross multiply
    125,668.50x = 188,536.77 × 42,562.50
  4. Step 4: Simplify right side
    125,668.50x = 8,024,596,273.13
  5. Step 5: Solve for x
    x = 8,024,596,273.13/125,668.50
  6. Step 6: Final answer
    x = 63,855.27

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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.