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Finding the Fourth Proportional to 275,429.10, 413,143.65 and 191,010.90

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Solution

The fourth proportional to 275,429.10, 413,143.65 and 191,010.90 is: 286,516.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,429.10 : 413,143.65 = 191,010.90 : x
  2. Step 2: Convert to fraction form
    275,429.10/413,143.65 = 191,010.90/x
  3. Step 3: Cross multiply
    275,429.10x = 413,143.65 × 191,010.90
  4. Step 4: Simplify right side
    275,429.10x = 78,914,940,415.79
  5. Step 5: Solve for x
    x = 78,914,940,415.79/275,429.10
  6. Step 6: Final answer
    x = 286,516.35

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1.5x scale

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.