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Finding the Fourth Proportional to 205,877.10, 308,930.85 and 87,528.30

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Solution

The fourth proportional to 205,877.10, 308,930.85 and 87,528.30 is: 131,341.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,877.10 : 308,930.85 = 87,528.30 : x
  2. Step 2: Convert to fraction form
    205,877.10/308,930.85 = 87,528.30/x
  3. Step 3: Cross multiply
    205,877.10x = 308,930.85 × 87,528.30
  4. Step 4: Simplify right side
    205,877.10x = 27,040,192,118.06
  5. Step 5: Solve for x
    x = 27,040,192,118.06/205,877.10
  6. Step 6: Final answer
    x = 131,341.43

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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.