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Finding the Fourth Proportional to 18,585.72, 27,884.05 and 7,486.70

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Solution

The fourth proportional to 18,585.72, 27,884.05 and 7,486.70 is: 11,232.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,585.72 : 27,884.05 = 7,486.70 : x
  2. Step 2: Convert to fraction form
    18,585.72/27,884.05 = 7,486.70/x
  3. Step 3: Cross multiply
    18,585.72x = 27,884.05 × 7,486.70
  4. Step 4: Simplify right side
    18,585.72x = 208,759,359.00
  5. Step 5: Solve for x
    x = 208,759,359.00/18,585.72
  6. Step 6: Final answer
    x = 11,232.24

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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.