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Finding the Fourth Proportional to 125,629.80, 188,385.30 and 73,055.40

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Solution

The fourth proportional to 125,629.80, 188,385.30 and 73,055.40 is: 109,548.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,629.80 : 188,385.30 = 73,055.40 : x
  2. Step 2: Convert to fraction form
    125,629.80/188,385.30 = 73,055.40/x
  3. Step 3: Cross multiply
    125,629.80x = 188,385.30 × 73,055.40
  4. Step 4: Simplify right side
    125,629.80x = 13,762,563,445.62
  5. Step 5: Solve for x
    x = 13,762,563,445.62/125,629.80
  6. Step 6: Final answer
    x = 109,548.56

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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.