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Finding the Fourth Proportional to 125,618.60, 188,370.30 and 55,461.80

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Solution

The fourth proportional to 125,618.60, 188,370.30 and 55,461.80 is: 83,167.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,618.60 : 188,370.30 = 55,461.80 : x
  2. Step 2: Convert to fraction form
    125,618.60/188,370.30 = 55,461.80/x
  3. Step 3: Cross multiply
    125,618.60x = 188,370.30 × 55,461.80
  4. Step 4: Simplify right side
    125,618.60x = 10,447,355,904.54
  5. Step 5: Solve for x
    x = 10,447,355,904.54/125,618.60
  6. Step 6: Final answer
    x = 83,167.27

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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.