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Finding the Fourth Proportional to 139,925.60, 193,101.54 and 76,267.52

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Solution

The fourth proportional to 139,925.60, 193,101.54 and 76,267.52 is: 105,251.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,925.60 : 193,101.54 = 76,267.52 : x
  2. Step 2: Convert to fraction form
    139,925.60/193,101.54 = 76,267.52/x
  3. Step 3: Cross multiply
    139,925.60x = 193,101.54 × 76,267.52
  4. Step 4: Simplify right side
    139,925.60x = 14,727,375,563.98
  5. Step 5: Solve for x
    x = 14,727,375,563.98/139,925.60
  6. Step 6: Final answer
    x = 105,251.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.