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Finding the Fourth Proportional to 329,912.64, 455,160.60 and 186,671.16

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Solution

The fourth proportional to 329,912.64, 455,160.60 and 186,671.16 is: 257,538.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    329,912.64 : 455,160.60 = 186,671.16 : x
  2. Step 2: Convert to fraction form
    329,912.64/455,160.60 = 186,671.16/x
  3. Step 3: Cross multiply
    329,912.64x = 455,160.60 × 186,671.16
  4. Step 4: Simplify right side
    329,912.64x = 84,965,357,188.30
  5. Step 5: Solve for x
    x = 84,965,357,188.30/329,912.64
  6. Step 6: Final answer
    x = 257,538.96

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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.