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Finding the Fourth Proportional to 18,442.64, 27,665.68 and 7,346.64

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Solution

The fourth proportional to 18,442.64, 27,665.68 and 7,346.64 is: 11,020.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,442.64 : 27,665.68 = 7,346.64 : x
  2. Step 2: Convert to fraction form
    18,442.64/27,665.68 = 7,346.64/x
  3. Step 3: Cross multiply
    18,442.64x = 27,665.68 × 7,346.64
  4. Step 4: Simplify right side
    18,442.64x = 203,249,791.32
  5. Step 5: Solve for x
    x = 203,249,791.32/18,442.64
  6. Step 6: Final answer
    x = 11,020.65

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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.