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Finding the Fourth Proportional to 125,693.20, 188,539.80 and 55,536.40

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Solution

The fourth proportional to 125,693.20, 188,539.80 and 55,536.40 is: 83,304.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,693.20 : 188,539.80 = 55,536.40 : x
  2. Step 2: Convert to fraction form
    125,693.20/188,539.80 = 55,536.40/x
  3. Step 3: Cross multiply
    125,693.20x = 188,539.80 × 55,536.40
  4. Step 4: Simplify right side
    125,693.20x = 10,470,821,748.72
  5. Step 5: Solve for x
    x = 10,470,821,748.72/125,693.20
  6. Step 6: Final answer
    x = 83,304.60

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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.