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Finding the Fourth Proportional to 18,356.02, 25,343.10 and 12,623.02

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Solution

The fourth proportional to 18,356.02, 25,343.10 and 12,623.02 is: 17,427.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,356.02 : 25,343.10 = 12,623.02 : x
  2. Step 2: Convert to fraction form
    18,356.02/25,343.10 = 12,623.02/x
  3. Step 3: Cross multiply
    18,356.02x = 25,343.10 × 12,623.02
  4. Step 4: Simplify right side
    18,356.02x = 319,906,458.16
  5. Step 5: Solve for x
    x = 319,906,458.16/18,356.02
  6. Step 6: Final answer
    x = 17,427.88

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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.