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Finding the Fourth Proportional to 136,465.99, 188,336.92 and 76,046.47

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Solution

The fourth proportional to 136,465.99, 188,336.92 and 76,046.47 is: 104,951.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,465.99 : 188,336.92 = 76,046.47 : x
  2. Step 2: Convert to fraction form
    136,465.99/188,336.92 = 76,046.47/x
  3. Step 3: Cross multiply
    136,465.99x = 188,336.92 × 76,046.47
  4. Step 4: Simplify right side
    136,465.99x = 14,322,357,275.71
  5. Step 5: Solve for x
    x = 14,322,357,275.71/136,465.99
  6. Step 6: Final answer
    x = 104,951.85

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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.