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Finding the Fourth Proportional to 25,175.38, 37,763.06 and 11,987.77

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Solution

The fourth proportional to 25,175.38, 37,763.06 and 11,987.77 is: 17,981.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,175.38 : 37,763.06 = 11,987.77 : x
  2. Step 2: Convert to fraction form
    25,175.38/37,763.06 = 11,987.77/x
  3. Step 3: Cross multiply
    25,175.38x = 37,763.06 × 11,987.77
  4. Step 4: Simplify right side
    25,175.38x = 452,694,813.34
  5. Step 5: Solve for x
    x = 452,694,813.34/25,175.38
  6. Step 6: Final answer
    x = 17,981.65

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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.