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Finding the Fourth Proportional to 18,460.84, 27,688.24 and 5,310.24

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Solution

The fourth proportional to 18,460.84, 27,688.24 and 5,310.24 is: 7,964.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,460.84 : 27,688.24 = 5,310.24 : x
  2. Step 2: Convert to fraction form
    18,460.84/27,688.24 = 5,310.24/x
  3. Step 3: Cross multiply
    18,460.84x = 27,688.24 × 5,310.24
  4. Step 4: Simplify right side
    18,460.84x = 147,031,199.58
  5. Step 5: Solve for x
    x = 147,031,199.58/18,460.84
  6. Step 6: Final answer
    x = 7,964.49

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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.