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Finding the Fourth Proportional to 26,840.70, 40,261.05 and 13,718.70

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Solution

The fourth proportional to 26,840.70, 40,261.05 and 13,718.70 is: 20,578.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,840.70 : 40,261.05 = 13,718.70 : x
  2. Step 2: Convert to fraction form
    26,840.70/40,261.05 = 13,718.70/x
  3. Step 3: Cross multiply
    26,840.70x = 40,261.05 × 13,718.70
  4. Step 4: Simplify right side
    26,840.70x = 552,329,266.64
  5. Step 5: Solve for x
    x = 552,329,266.64/26,840.70
  6. Step 6: Final answer
    x = 20,578.05

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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.