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Finding the Fourth Proportional to 125,634.80, 188,452.20 and 51,762.80

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Solution

The fourth proportional to 125,634.80, 188,452.20 and 51,762.80 is: 77,644.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,634.80 : 188,452.20 = 51,762.80 : x
  2. Step 2: Convert to fraction form
    125,634.80/188,452.20 = 51,762.80/x
  3. Step 3: Cross multiply
    125,634.80x = 188,452.20 × 51,762.80
  4. Step 4: Simplify right side
    125,634.80x = 9,754,813,538.16
  5. Step 5: Solve for x
    x = 9,754,813,538.16/125,634.80
  6. Step 6: Final answer
    x = 77,644.20

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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.