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Finding the Fourth Proportional to 18,507.38, 27,756.96 and 7,411.08

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Solution

The fourth proportional to 18,507.38, 27,756.96 and 7,411.08 is: 11,114.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,507.38 : 27,756.96 = 7,411.08 : x
  2. Step 2: Convert to fraction form
    18,507.38/27,756.96 = 7,411.08/x
  3. Step 3: Cross multiply
    18,507.38x = 27,756.96 × 7,411.08
  4. Step 4: Simplify right side
    18,507.38x = 205,709,155.21
  5. Step 5: Solve for x
    x = 205,709,155.21/18,507.38
  6. Step 6: Final answer
    x = 11,114.98

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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.