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Finding the Fourth Proportional to 194,487.68, 268,386 and 109,612.64

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Solution

The fourth proportional to 194,487.68, 268,386 and 109,612.64 is: 151,261.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,487.68 : 268,386 = 109,612.64 : x
  2. Step 2: Convert to fraction form
    194,487.68/268,386 = 109,612.64/x
  3. Step 3: Cross multiply
    194,487.68x = 268,386 × 109,612.64
  4. Step 4: Simplify right side
    194,487.68x = 29,418,497,999.04
  5. Step 5: Solve for x
    x = 29,418,497,999.04/194,487.68
  6. Step 6: Final answer
    x = 151,261.50

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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.