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Finding the Fourth Proportional to 18,353.60, 27,522.30 and 7,256.60

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Solution

The fourth proportional to 18,353.60, 27,522.30 and 7,256.60 is: 10,881.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,353.60 : 27,522.30 = 7,256.60 : x
  2. Step 2: Convert to fraction form
    18,353.60/27,522.30 = 7,256.60/x
  3. Step 3: Cross multiply
    18,353.60x = 27,522.30 × 7,256.60
  4. Step 4: Simplify right side
    18,353.60x = 199,718,322.18
  5. Step 5: Solve for x
    x = 199,718,322.18/18,353.60
  6. Step 6: Final answer
    x = 10,881.70

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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.