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Finding the Fourth Proportional to 289,556.56, 434,062.52 and 156,237.04

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Solution

The fourth proportional to 289,556.56, 434,062.52 and 156,237.04 is: 234,208.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,556.56 : 434,062.52 = 156,237.04 : x
  2. Step 2: Convert to fraction form
    289,556.56/434,062.52 = 156,237.04/x
  3. Step 3: Cross multiply
    289,556.56x = 434,062.52 × 156,237.04
  4. Step 4: Simplify right side
    289,556.56x = 67,816,643,299.74
  5. Step 5: Solve for x
    x = 67,816,643,299.74/289,556.56
  6. Step 6: Final answer
    x = 234,208.62

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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.