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Finding the Fourth Proportional to 18,296.70, 27,445.05 and 12,464.70

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Solution

The fourth proportional to 18,296.70, 27,445.05 and 12,464.70 is: 18,697.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,296.70 : 27,445.05 = 12,464.70 : x
  2. Step 2: Convert to fraction form
    18,296.70/27,445.05 = 12,464.70/x
  3. Step 3: Cross multiply
    18,296.70x = 27,445.05 × 12,464.70
  4. Step 4: Simplify right side
    18,296.70x = 342,094,314.74
  5. Step 5: Solve for x
    x = 342,094,314.74/18,296.70
  6. Step 6: Final answer
    x = 18,697.05

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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.