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Finding the Fourth Proportional to 139,092.60, 208,298.56 and 125,614.20

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Solution

The fourth proportional to 139,092.60, 208,298.56 and 125,614.20 is: 188,113.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,092.60 : 208,298.56 = 125,614.20 : x
  2. Step 2: Convert to fraction form
    139,092.60/208,298.56 = 125,614.20/x
  3. Step 3: Cross multiply
    139,092.60x = 208,298.56 × 125,614.20
  4. Step 4: Simplify right side
    139,092.60x = 26,165,256,975.55
  5. Step 5: Solve for x
    x = 26,165,256,975.55/139,092.60
  6. Step 6: Final answer
    x = 188,113.94

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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.