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Finding the Fourth Proportional to 26,654.32, 39,974.50 and 7,929.32

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Solution

The fourth proportional to 26,654.32, 39,974.50 and 7,929.32 is: 11,891.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,654.32 : 39,974.50 = 7,929.32 : x
  2. Step 2: Convert to fraction form
    26,654.32/39,974.50 = 7,929.32/x
  3. Step 3: Cross multiply
    26,654.32x = 39,974.50 × 7,929.32
  4. Step 4: Simplify right side
    26,654.32x = 316,970,602.34
  5. Step 5: Solve for x
    x = 316,970,602.34/26,654.32
  6. Step 6: Final answer
    x = 11,891.90

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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.