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Finding the Fourth Proportional to 26,740.88, 36,899.88 and 15,560.72

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Solution

The fourth proportional to 26,740.88, 36,899.88 and 15,560.72 is: 21,472.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,740.88 : 36,899.88 = 15,560.72 : x
  2. Step 2: Convert to fraction form
    26,740.88/36,899.88 = 15,560.72/x
  3. Step 3: Cross multiply
    26,740.88x = 36,899.88 × 15,560.72
  4. Step 4: Simplify right side
    26,740.88x = 574,188,700.71
  5. Step 5: Solve for x
    x = 574,188,700.71/26,740.88
  6. Step 6: Final answer
    x = 21,472.32

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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.