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Finding the Fourth Proportional to 19,906.64, 27,411.91 and 19,464.65

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Solution

The fourth proportional to 19,906.64, 27,411.91 and 19,464.65 is: 26,803.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,906.64 : 27,411.91 = 19,464.65 : x
  2. Step 2: Convert to fraction form
    19,906.64/27,411.91 = 19,464.65/x
  3. Step 3: Cross multiply
    19,906.64x = 27,411.91 × 19,464.65
  4. Step 4: Simplify right side
    19,906.64x = 533,563,233.98
  5. Step 5: Solve for x
    x = 533,563,233.98/19,906.64
  6. Step 6: Final answer
    x = 26,803.28

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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.