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Finding the Fourth Proportional to 26,755.50, 36,925.30 and 15,425.40

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Solution

The fourth proportional to 26,755.50, 36,925.30 and 15,425.40 is: 21,288.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,755.50 : 36,925.30 = 15,425.40 : x
  2. Step 2: Convert to fraction form
    26,755.50/36,925.30 = 15,425.40/x
  3. Step 3: Cross multiply
    26,755.50x = 36,925.30 × 15,425.40
  4. Step 4: Simplify right side
    26,755.50x = 569,587,522.62
  5. Step 5: Solve for x
    x = 569,587,522.62/26,755.50
  6. Step 6: Final answer
    x = 21,288.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.