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Finding the Fourth Proportional to 194,602.64, 268,551.52 and 105,178.64

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Solution

The fourth proportional to 194,602.64, 268,551.52 and 105,178.64 is: 145,146.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,602.64 : 268,551.52 = 105,178.64 : x
  2. Step 2: Convert to fraction form
    194,602.64/268,551.52 = 105,178.64/x
  3. Step 3: Cross multiply
    194,602.64x = 268,551.52 × 105,178.64
  4. Step 4: Simplify right side
    194,602.64x = 28,245,881,774.88
  5. Step 5: Solve for x
    x = 28,245,881,774.88/194,602.64
  6. Step 6: Final answer
    x = 145,146.45

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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.