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Finding the Fourth Proportional to 19,658.17, 27,129.41 and 14,804.21

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Solution

The fourth proportional to 19,658.17, 27,129.41 and 14,804.21 is: 20,430.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,658.17 : 27,129.41 = 14,804.21 : x
  2. Step 2: Convert to fraction form
    19,658.17/27,129.41 = 14,804.21/x
  3. Step 3: Cross multiply
    19,658.17x = 27,129.41 × 14,804.21
  4. Step 4: Simplify right side
    19,658.17x = 401,629,310.16
  5. Step 5: Solve for x
    x = 401,629,310.16/19,658.17
  6. Step 6: Final answer
    x = 20,430.66

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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.