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Finding the Fourth Proportional to 193,384.53, 290,070.39 and 79,528.40

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Solution

The fourth proportional to 193,384.53, 290,070.39 and 79,528.40 is: 119,289.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,384.53 : 290,070.39 = 79,528.40 : x
  2. Step 2: Convert to fraction form
    193,384.53/290,070.39 = 79,528.40/x
  3. Step 3: Cross multiply
    193,384.53x = 290,070.39 × 79,528.40
  4. Step 4: Simplify right side
    193,384.53x = 23,068,832,553.72
  5. Step 5: Solve for x
    x = 23,068,832,553.72/193,384.53
  6. Step 6: Final answer
    x = 119,289.96

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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.