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Finding the Fourth Proportional to 386,688.27, 579,346.12 and 161,553.23

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Solution

The fourth proportional to 386,688.27, 579,346.12 and 161,553.23 is: 242,043.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,688.27 : 579,346.12 = 161,553.23 : x
  2. Step 2: Convert to fraction form
    386,688.27/579,346.12 = 161,553.23/x
  3. Step 3: Cross multiply
    386,688.27x = 579,346.12 × 161,553.23
  4. Step 4: Simplify right side
    386,688.27x = 93,595,233,269.47
  5. Step 5: Solve for x
    x = 93,595,233,269.47/386,688.27
  6. Step 6: Final answer
    x = 242,043.11

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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.