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Finding the Fourth Proportional to 66,614.62, 99,928.59 and 19,230.87

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Solution

The fourth proportional to 66,614.62, 99,928.59 and 19,230.87 is: 28,848.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,614.62 : 99,928.59 = 19,230.87 : x
  2. Step 2: Convert to fraction form
    66,614.62/99,928.59 = 19,230.87/x
  3. Step 3: Cross multiply
    66,614.62x = 99,928.59 × 19,230.87
  4. Step 4: Simplify right side
    66,614.62x = 1,921,713,464.09
  5. Step 5: Solve for x
    x = 1,921,713,464.09/66,614.62
  6. Step 6: Final answer
    x = 28,848.22

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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.