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Finding the Fourth Proportional to 189,391.44, 283,816.50 and 139,076.82

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Solution

The fourth proportional to 189,391.44, 283,816.50 and 139,076.82 is: 208,416.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,391.44 : 283,816.50 = 139,076.82 : x
  2. Step 2: Convert to fraction form
    189,391.44/283,816.50 = 139,076.82/x
  3. Step 3: Cross multiply
    189,391.44x = 283,816.50 × 139,076.82
  4. Step 4: Simplify right side
    189,391.44x = 39,472,296,283.53
  5. Step 5: Solve for x
    x = 39,472,296,283.53/189,391.44
  6. Step 6: Final answer
    x = 208,416.47

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1.5x scale

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.