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Finding the Fourth Proportional to 194,886.78, 268,844.40 and 118,385.52

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Solution

The fourth proportional to 194,886.78, 268,844.40 and 118,385.52 is: 163,311.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,886.78 : 268,844.40 = 118,385.52 : x
  2. Step 2: Convert to fraction form
    194,886.78/268,844.40 = 118,385.52/x
  3. Step 3: Cross multiply
    194,886.78x = 268,844.40 × 118,385.52
  4. Step 4: Simplify right side
    194,886.78x = 31,827,284,093.09
  5. Step 5: Solve for x
    x = 31,827,284,093.09/194,886.78
  6. Step 6: Final answer
    x = 163,311.66

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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.