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Finding the Fourth Proportional to 19,125.81, 28,494.81 and 18,184.77

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Solution

The fourth proportional to 19,125.81, 28,494.81 and 18,184.77 is: 27,092.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,125.81 : 28,494.81 = 18,184.77 : x
  2. Step 2: Convert to fraction form
    19,125.81/28,494.81 = 18,184.77/x
  3. Step 3: Cross multiply
    19,125.81x = 28,494.81 × 18,184.77
  4. Step 4: Simplify right side
    19,125.81x = 518,171,566.04
  5. Step 5: Solve for x
    x = 518,171,566.04/19,125.81
  6. Step 6: Final answer
    x = 27,092.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.