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Finding the Fourth Proportional to 27,685.54, 41,528.95 and 9,917.42

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Solution

The fourth proportional to 27,685.54, 41,528.95 and 9,917.42 is: 14,876.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,685.54 : 41,528.95 = 9,917.42 : x
  2. Step 2: Convert to fraction form
    27,685.54/41,528.95 = 9,917.42/x
  3. Step 3: Cross multiply
    27,685.54x = 41,528.95 × 9,917.42
  4. Step 4: Simplify right side
    27,685.54x = 411,860,039.31
  5. Step 5: Solve for x
    x = 411,860,039.31/27,685.54
  6. Step 6: Final answer
    x = 14,876.36

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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.