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Finding the Fourth Proportional to 342,511.54, 472,654.23 and 189,556.15

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Solution

The fourth proportional to 342,511.54, 472,654.23 and 189,556.15 is: 261,581.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,511.54 : 472,654.23 = 189,556.15 : x
  2. Step 2: Convert to fraction form
    342,511.54/472,654.23 = 189,556.15/x
  3. Step 3: Cross multiply
    342,511.54x = 472,654.23 × 189,556.15
  4. Step 4: Simplify right side
    342,511.54x = 89,594,516,120.01
  5. Step 5: Solve for x
    x = 89,594,516,120.01/342,511.54
  6. Step 6: Final answer
    x = 261,581.01

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1.5x scale

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.