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Finding the Fourth Proportional to 26,611, 39,916.70 and 11,815.94

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Solution

The fourth proportional to 26,611, 39,916.70 and 11,815.94 is: 17,724.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,611 : 39,916.70 = 11,815.94 : x
  2. Step 2: Convert to fraction form
    26,611/39,916.70 = 11,815.94/x
  3. Step 3: Cross multiply
    26,611x = 39,916.70 × 11,815.94
  4. Step 4: Simplify right side
    26,611x = 471,653,332.20
  5. Step 5: Solve for x
    x = 471,653,332.20/26,611
  6. Step 6: Final answer
    x = 17,724.00

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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.