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Finding the Fourth Proportional to 26,963.20, 40,428.60 and 13,841.20

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Solution

The fourth proportional to 26,963.20, 40,428.60 and 13,841.20 is: 20,753.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,963.20 : 40,428.60 = 13,841.20 : x
  2. Step 2: Convert to fraction form
    26,963.20/40,428.60 = 13,841.20/x
  3. Step 3: Cross multiply
    26,963.20x = 40,428.60 × 13,841.20
  4. Step 4: Simplify right side
    26,963.20x = 559,580,338.32
  5. Step 5: Solve for x
    x = 559,580,338.32/26,963.20
  6. Step 6: Final answer
    x = 20,753.48

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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.