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Finding the Fourth Proportional to 18,747.84, 25,871.22 and 10,364.28

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Solution

The fourth proportional to 18,747.84, 25,871.22 and 10,364.28 is: 14,302.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,747.84 : 25,871.22 = 10,364.28 : x
  2. Step 2: Convert to fraction form
    18,747.84/25,871.22 = 10,364.28/x
  3. Step 3: Cross multiply
    18,747.84x = 25,871.22 × 10,364.28
  4. Step 4: Simplify right side
    18,747.84x = 268,136,568.02
  5. Step 5: Solve for x
    x = 268,136,568.02/18,747.84
  6. Step 6: Final answer
    x = 14,302.26

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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.