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Finding the Fourth Proportional to 26,754.84, 36,921.58 and 15,424.28

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Solution

The fourth proportional to 26,754.84, 36,921.58 and 15,424.28 is: 21,285.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,754.84 : 36,921.58 = 15,424.28 : x
  2. Step 2: Convert to fraction form
    26,754.84/36,921.58 = 15,424.28/x
  3. Step 3: Cross multiply
    26,754.84x = 36,921.58 × 15,424.28
  4. Step 4: Simplify right side
    26,754.84x = 569,488,657.90
  5. Step 5: Solve for x
    x = 569,488,657.90/26,754.84
  6. Step 6: Final answer
    x = 21,285.45

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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.