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Finding the Fourth Proportional to 19,590.16, 27,037.72 and 18,942.16

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Solution

The fourth proportional to 19,590.16, 27,037.72 and 18,942.16 is: 26,143.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,590.16 : 27,037.72 = 18,942.16 : x
  2. Step 2: Convert to fraction form
    19,590.16/27,037.72 = 18,942.16/x
  3. Step 3: Cross multiply
    19,590.16x = 27,037.72 × 18,942.16
  4. Step 4: Simplify right side
    19,590.16x = 512,152,818.28
  5. Step 5: Solve for x
    x = 512,152,818.28/19,590.16
  6. Step 6: Final answer
    x = 26,143.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.